Broly’s power increase in this movie explained (Spoilers)

[Nickolaidas]

The only reason Frieza, Broly and Kefla powered up so fast is the same reason Roshi was able to go toe-to-toe for a few seconds with Base ToP Goku and Anime Frost / Manga Jiren.

Plot convenience.

The writers couldn't find a way to make these fighters match the main cast in strength in a short span of time, so they resorted to this 'they evolve and learn as they fight' / 'is a natural prodigy' bullcrap.

Goku and Vegeta are just as pureblooded saiyans as Caulifla and Kale were - you didn't see them increase their power level a thousand times in 20 minutes, did you? No. Because the plot didn't demand it.

Since Broly reached UI levels in two hours (and PLs in DB rise geometrically), in another 2 hours he should be able to reach a PL almost ten thousand times more powerful than UI. Picture the ridiculousness of the idea in your head for a second.

I *guarantee* you that neither Frieza, Broly or Kefla will be able to have such a massive power level boost AGAIN in such little time, UNLESS the PL difference between them and Goku/Vegeta grows extremely large once more and the plot will need them to fight the Saiyan duo for a second/third time.

There's no theory, no in-lore explanation that justifies Broly reaching SSB strength in 1 hour and not being able to surpass it in another half an hour. It makes no sense for Broly to evolve from Base Vegeta to SSB Goku and not being able to do the same with SSB Gogeta. What's stopping him? Why did he finally stop 'evolving' when faced with SSB Gogeta? Because his Ikari/SSJ Rage/whatchamacallit suddenly found its limits? No. Because SSB Gogeta simply had to win and pwn him. Because the plot demanded that Broly's PL could only go so far in this battle.

Power levels are now completely arbitrary, training makes no logical sense and the power leaps are entirely depended on the whims of Toriyama and the writing staff. I'm not complaining of course, that's how fictional writing goes, but I am baffled at the excruciating attempts of the fandom to try and give an reasonable explanation for Broly/Kefla/Roshi/Frieza's power ups when there is literally none other than the writers say 'let's make these guys able to go toe to toe with the protagonists'.

[Raphael_Z]

The only reason Frieza, Broly and Kefla powered up so fast is the same reason Roshi was able to go toe-to-toe for a few seconds with Base ToP Goku and Anime Frost / Manga Jiren.

Plot convenience.

The writers couldn't find a way to make these fighters match the main cast in strength in a short span of time, so they resorted to this 'they evolve and learn as they fight' / 'is a natural prodigy' bullcrap.

Goku and Vegeta are just as pureblooded saiyans as Caulifla and Kale were - you didn't see them increase their power level a thousand times in 20 minutes, did you? No. Because the plot didn't demand it.

Since Broly reached UI levels in two hours (and PLs in DB rise geometrically), in another 2 hours he should be able to reach a PL almost ten thousand times more powerful than UI. Picture the ridiculousness of the idea in your head for a second.

I *guarantee* you that neither Frieza, Broly or Kefla will be able to have such a massive power level boost AGAIN in such little time, UNLESS the PL difference between them and Goku/Vegeta grows extremely large once more and the plot will need them to fight the Saiyan duo for a second/third time.

There's no theory, no in-lore explanation that justifies Broly reaching SSB strength in 1 hour and not being able to surpass it in another half an hour. It makes no sense for Broly to evolve from Base Vegeta to SSB Goku and not being able to do the same with SSB Gogeta. What's stopping him? Why did he finally stop 'evolving' when faced with SSB Gogeta? Because his Ikari/SSJ Rage/whatchamacallit suddenly found its limits? No. Because SSB Gogeta simply had to win and pwn him. Because the plot demanded that Broly's PL could only go so far in this battle.

Power levels are now completely arbitrary, training makes no logical sense and the power leaps are entirely depended on the whims of Toriyama and the writing staff. I'm not complaining of course, that's how fictional writing goes, but I am baffled at the excruciating attempts of the fandom to try and give an reasonable explanation for Broly/Kefla/Roshi/Frieza's power ups when there is literally none other than the writers say 'let's make these guys able to go toe to toe with the protagonists'.

I have this theory that Saiyans can "leech" power when sparring/fighting against way stronger Saiyans. Then, after the fight, the power they leeched gets added to their own power.

That's the only explanation for the HUGE level increases of Trunks (who achieved SS1 as if it was nothing), Goten, Kale, Caulifla, Cabba and Broly. If by some time travel shenanigans, Kid Vegeta had spared against, let's say, SSB Goku, then Kid Vegeta would've unlocked (at least) SSJ2. If Kid Goku (from the Pilaf Saga), had spared against SSB Vegeta he would have unlocked SSJ3 or beyond.

[WittyUsername]

The only reason Frieza, Broly and Kefla powered up so fast is the same reason Roshi was able to go toe-to-toe for a few seconds with Base ToP Goku and Anime Frost / Manga Jiren.

Plot convenience.

The writers couldn't find a way to make these fighters match the main cast in strength in a short span of time, so they resorted to this 'they evolve and learn as they fight' / 'is a natural prodigy' bullcrap.

Goku and Vegeta are just as pureblooded saiyans as Caulifla and Kale were - you didn't see them increase their power level a thousand times in 20 minutes, did you? No. Because the plot didn't demand it.

Since Broly reached UI levels in two hours (and PLs in DB rise geometrically), in another 2 hours he should be able to reach a PL almost ten thousand times more powerful than UI. Picture the ridiculousness of the idea in your head for a second.

I *guarantee* you that neither Frieza, Broly or Kefla will be able to have such a massive power level boost AGAIN in such little time, UNLESS the PL difference between them and Goku/Vegeta grows extremely large once more and the plot will need them to fight the Saiyan duo for a second/third time.

There's no theory, no in-lore explanation that justifies Broly reaching SSB strength in 1 hour and not being able to surpass it in another half an hour. It makes no sense for Broly to evolve from Base Vegeta to SSB Goku and not being able to do the same with SSB Gogeta. What's stopping him? Why did he finally stop 'evolving' when faced with SSB Gogeta? Because his Ikari/SSJ Rage/whatchamacallit suddenly found its limits? No. Because SSB Gogeta simply had to win and pwn him. Because the plot demanded that Broly's PL could only go so far in this battle.

Power levels are now completely arbitrary, training makes no logical sense and the power leaps are entirely depended on the whims of Toriyama and the writing staff. I'm not complaining of course, that's how fictional writing goes, but I am baffled at the excruciating attempts of the fandom to try and give an reasonable explanation for Broly/Kefla/Roshi/Frieza's power ups when there is literally none other than the writers say 'let's make these guys able to go toe to toe with the protagonists'.

The “power levels are bullshit” meme certainly seems more relevant now than it was in the pre-BoG days. That’s not to say that people aren’t free to have debates about how strong the characters are, but the writers don’t seem to put as much thought into these things as the fans do.

[Nickolaidas]

I have this theory that Saiyans can "leech" power when sparring/fighting against way stronger Saiyans. Then, after the fight, the power they leeched gets added to their own power.

That's the only explanation for the HUGE level increases of Trunks (who achieved SS1 as if it was nothing), Goten, Kale, Caulifla, Cabba and Broly. If by some time travel shenanigans, Kid Vegeta had spared against, let's say, SSB Goku, then Kid Vegeta would've unlocked (at least) SSJ2. If Kid Goku (from the Pilaf Saga), had spared against SSB Vegeta he would have unlocked SSJ3 or beyond.

But the power boost bullcrap applies to non-saiyans as well. Piccolo has a PL that could hardly rival Ginew's when he appears on Namek, yet fusing with a 42,000 Nail he gets strong enough to rival a million PL 2nd stage Frieza. Later, by fusing with a 400 PL Kami, he becomes just as strong as #17. This is mathematical bullshit and Guru's foreshadowing / lampshading does little to hide the absurdity of the power-up.

Frieza having a PL of 10 mil without training a day in his life is utterly stupid. If his DNA makes him go ten mil without doing ANYTHING, he should've reached UI just by punching somebody once or twice. It's stupid.

Roshi is never shown training, he just masturbates to porn, reads playboy and drools over models and gym teachers all the time we see him at Kamehouse. Yet he is somehow able to exchange fists with Frost / Jiren - JIREN, of all people - without any explanation other than 'he has been training in secret'. Roshi taking breaks between wanking sessions somehow proved to be just as effective training as Vegeta's and Goku's. To be perfectly frank, the Saiyan duo must be really half-assing it if the old man was able to catch up with them that way.

Again, I don't have any problem with all that - I'm just pointing out how utterly pointless it is to try and headcanon Broly's PL and evolution when there is no rhyme or reason to it whatsoever. Broly is a badass Saiyan with a lot of potential and great power - that's it. No reason to estimate how many milliseconds it takes to reach SSJ power levels and the like. It's an exercise in futility.