RandomGuy96 wrote:Fused Zamasu doesn't seem that much stronger than SSR Black, SSB Goku can go toe to toe with him after solving the stamina issue and an exhausted SSB Goku can blow a hole in his torso with a Kamehameha. Probably because Future Zamasu is extremely weak in the manga, like Cell Games to early Buu arc level weak (it's implied he's below SS1 Goku, and if nothing else he's explicitly an ant compared to Trunks). It seems similar to when Kibito and Kaioshin fused, and the resulting increase wasn't that big because Kibito is dozens of times weaker than Kaioshin.
Goku used SSJ because Zamasu had a hole trhough his chest. Later on Goku used SSJG to beat him up, thought Goku admitedly was too tired because of the Mafuba, so that probably wasn't him at full power.
When I read the manga I just had the impression that CSSB and SSB/SSG switching were basically the same thing ("he's fighting consistently at 100% power" vs "his power isn't dropping off at all"), except the former was far faster since now the user has the ki of SSB in all movements rather than just during attacks. Is there anything contradicting that interpretation?
Yes.
Vegeta actually had the speed of a SSJB as well:
Ch. 22, pg. 16.5-7
Context: as Black struggles to block Vegeta’s punch
Goku Black: “You’ve gotten faster… What have you done…?!”
Vegeta: “I will teach you exactly what I’ve done.”
If Vegeta's SSJB bursts were as strong as PSSJB Goku they wouldn't have acted like Goku was their last defense, given how Vegeta could just butt in and hold Zamasu while Trunks heals Goku. Instead, Vegeta refuses to be healed and straight up says only Goku can fight Zamasu:
Ch. 24, pg. 12.6
Context: Trunks wants heal Vegeta but Vegeta refuses
Vegeta: “For now…the only one who’s capable of fighting equally with Zamasu using Super Saiyan Blue is Kakarrot, not me…”
Plus PSSJB seals the overflowing Ki (The SSJB aura) inside the body, whereas Vegeta had an aura when he turns SSJB to pummel Black.
ZombieVito wrote:Vegeta: The fact that it's only able to output full power for a very short time is Blue's greatest weakness... But he's tackled that head on and overcome it.
Trunks: Th... Then... Right now, Goku is...
Vegeta: He's fighting at a constant 100% of his full power.
This is the explanation Vegeta gives to Trunks and nowhere does this say CSSB is stronger. It says something quite different actually. For a short while after Blue is activated it has all of the power available, meaning that for that amount of time CSSB is equal to Blue power level wise, the only difference with CSSB is that the power doesn't decrease after activating it. Which means Black's Rose form is equal or a bit stronger than Goku's CSSB.
This makes Goku's fight with Merged Zamasu impossible.
No matter how many times you try to defend this, this is a plothole.
You forgot one important line:
Vegeta: “Kakarrot… He managed to seal the Blue’s overflowing power within his body.”
Goku not only managed to overcome the stamina issues, but he also has sealed the SSJB aura (That is pretty much Ki leaking off one's body) within his body. That's why his body was on the verge of collapsing throughout the fight: He was holding overflowing Ki within his body, akin to keeping more water inside a bottle than the bottle's maximum capability.
It's not a plothole, it's just dumb writting.