0) Manga-derived SSJ Goku:
To start this craptacular guide off, we need a PL we can all agree on. Since a lot of people don't like the daizenshuu's SSJ Goku and Freeza PLs, we'll use one derived solely from what we see in the manga.
The largest PL we ever get is second form Freeza's of "at least 1,000,000" (<obligatory "OVER NINE HUNDRED THOUSAAAAAAAAND!!!" joke>). Vegeta is capable of seeing form four Freeza's finger blasts, which tells us his PL is also beyond 1 Million (as Piccolo is around 1 million and can't), and that Goku -before Kaioken- must also be greater than 1 million since he dwarfs Vegeta at this point. Since Freeza, at 50%, is greater than Goku who is using Kaioken x20, we know that SSJ Goku in the Namek saga must have a PL greater than 40 Million. (IE: Greater than 2x 20x 1 Million.)
Thus our starting unknown PL is a number greater than 40,000,000.
1) Android Saga:
At this point a lot of training gets done and SSJs are appearing everywhere. From common sense, we know that Goku, Vegeta, and Trunks all have PLs that make "Over 40 Million" oldschool. Meanwhile #16, #17, and #18 can toss them around like rag dolls, so we know they must also obviously be among the "Over 40 Million" crowd. Finally, after fusing with Kami, Piccolo becomes a part of that group as well by becoming as powerful as #17.
Thus:
SSJ Trunks = Over 40,000,000
SSJ Goku = Over 40,000,000
SSJ Vegeta = Over 40,000,000 ("greater than Goku")
#18 = Over 40,000,000 ("greater than Vegeta")
#17 = Over 40,000,000 ("greater than #18")
Piccolo (fused w/Kami) = Over 40,000,000 ("equal to #17")
2) Cell Sagas
We also know that Cell dwarfs 40 Million by the time he is prepared to assimilate #17 and #18. We also know that #16 is equal to strength to Cell at this point, so he also reached over 40 million. Since assimilating them does more than add their power to his own, it stands to reason that Cell's second form would have a PL greater than 80 Million, while USSJ Vegeta and Trunks also reach over 80 Million, and that Perfect Cell reaches over 120 Million, while SSJ Goku and Gohan top 80 Million and SSJ2 Gohan dwarfs Cell's 120 Million. USSJ2 Trunks also reaches the "over 120 million" range as Cell admits that Trunks is stronger than him, but it's useless power, so he doesn't defeat Cell.
En résumé:
First Form Cell = Over 40,000,000 ("greater than #17")
#16 = Over 40,000,000 ("equal to Cell")
Second Form Cell = Over 80,000,000 ("greater than #17 + First Form Cell")
USSJ Vegeta = Over 80,000,000 ("greater than Second Form Cell")
USSJ Trunks = Over 80,000,000 ("equal to USSJ Vegeta")
Perfect Cell = Over 120,000,000 ("greater than #18 + Second Form Cell")
USSJ2 Trunks = Over 120,000,000 ("greater than Perfect Cell")
SSJ Goku = Over 80,000,000 ("greater than USSJ Vegeta and Trunks")
SSJ Gohan = Over 80,000,000 ("greater than USSJ Vegeta and Trunks")
SSJ2 Gohan = Over 120,000,000 ("greater than Perfect Cell")
3) 25th Budokai:
It stands to reason that everybody other than those who retired kept training, thus inproving their skills instead of losing them. Though there's argument over whether or not Dabura was actually as strong as Cell or not, I believe he was, as SSJ Gohan was able to fight, but not defeat, Perfect Cell. Thus, I feel it's only Gohan who's weaker than Cell by the time the Budokai occurred. Since "Over 120 Million" is a figure that is completely being dwarfed by Perfect Cell, I think it's safe to say that Dabura is also over 120 Million, just not as much as Perfect Cell.
As for SSJ2 Vegeta and Goku, I think, judging by their candor, that they both exceed Perfect Cell's 120,000,000. Although we don't for sure if Goten and Trunks have surpassed Freeza by this point, I believe they have since #18 is worried about being wounded by them. Though I doubt they'd do much (if any) damage against her, it's enough to cause her to worry, which is something SSJ Vegeta couldn't do. At that, SSJ Vegeta dwarfed Freeza when he fought her, which is why I believe they exceed Freeza in strength. Meanwhile we don't know Kaioshin's strength, but know it makes Freeza look like a gnat, but is weaker than Dabura's. Thus, for safety's sake, I'll just clock him at "over 40,000,000" instead of guessing if he's weaker or stronger than Second Form Cell. Also, since Yakon drives fear into Kaioshin as well, we can safely assume that he's at least stronger than Freeza.
Summary:
Majin SSJ2 Vegeta: Over 120,000,000 ("as strong as SSJ2 Goku")
SSJ2 Goku: Over 120,000,000
Dabura: Over 120,000,000 ("About as strong as Cell")
Piccolo: Over 40,000,000
SSJ Goten: Over 40,000,000
SSJ Trunks: Over 40,000,000
Kaioshin: Over 40,000,000 ("able to kill Freeza in one hit")
Kibito: Over 40,000,000
Yakon: Over 40,000,000 (Possibly greater than Kaioshin)
4) Boo Saga:
Assimilations and Fusions are actually what make this easier to calculate since it's safe for us to assume that it's at LEAST an addition of PLs. Since Fat Boo can kick everybody's ass, we know his PL dwarfs 120 Million. From there, just add other people's PLs to his own. Since we know SSJ3 Gotenks is able to go head to head with Super Boo, we know he must have a PL over 120 Million as well, while SSJ Gotenks can be calculated as dwarfing 80 Million since we know Goten and Trunks each have 40 Million.
As for Gohan (post-Rou Kaioshin training), it is said that he's stronger than Super Boo + Piccolo, so we know his PL is over 160 Million. Thus Vegetto (at least in SSJ) must have a PL greater than double that, as it dwarfs Super Boo + Piccolo + Gohan. As for SSJ3 Goku and Kid Boo, we can only know they're stronger than 120,000,000 without getting into serious debates. Since Kibito and Kaioshin can both easily kill Freeza, Kibitshin would be at least double that strength.
Finally:
Fat (Majin) Boo: Over 120,000,000
Skinny Boo: Over 60,000,000 ("Most of Majin Boo's strength," ie: significantly higher than half)
Super Boo: Over 120,000,000 ("stronger than Fat Boo")
Piccolo: Over 40,000,000
SSJ Gotenks: Over 80,000,000 ("stronger than SSJ Goten + SSJ Trunks")
SSJ3 Gotenks:Over 120,000,000 ("about as strong as Super Boo")
Super Boo (Piccolo): Over 160,000,000 ("stronger than Super Boo + Piccolo")
Super Boo (Gotenks): Over 280,000,000 ("stronger than Super Boo + Piccolo + SSJ3 Gotenks)
"Mystic" Gohan: Over 160,000,000 ("stronger than Super Boo + Piccolo")
Super Boo (Gohan): Over 320,000,000 ("stronger than Super Boo + Gohan")
SSJ Vegetto: Over 320,000,000 ("Stronger than Super Boo + Gohan")
SSJ3 Goku: Over 120,000,000
Kid Boo: Over 120,000,000
Kibitoshin: Over 80,000,000 ("Stronger than Kibito + Kaioshin")
Now to explain why the daizenshuu didn't even try this:
The daizenshuu tried to explain Goku's pre-kaioken PL as being 3,000,000, and his SSJ PL (something greater than 40x 3 mil) as being 150,000,000. Replace all the "Over 40,000,000" with "Over 150,000,000" and you'll quickly end up with PLs in the Billions.
You may now commence either drooling or mocking my guide.
