Which is stronger? - Shinku hadouken or kamahameha

[Nantuko Joe]

Hmm....King Kai Fist X2,X3,X4....etc.
Hmm amazing how Goku stated he might explode from using that power inhancing tech.....but he never did....

SBYRD5: King Kai Fist? Please, it's the Kaiouken.

and he can't explode from it, that's bs...not even the anime claimed that. The only negative side effect is that the Kaiouken puts an extreme amount of stress on the body, and if he uses too high of a level for too long, it could kill him due to the stress and tiredness.

And Nantuko Joe, and Dan Hibiki? i have a question. (Im only familiar with the anime) why, when majin vegeta attempts to kill majin buu, does he not destroy the planet? He is stronger than imperfect cell was, and yet imperfect cell had the power to blow up the earth with a self destruct. Plus, vegeta's power was boosted by babidi's control. Yet his blast only left a crater which couldnt have been more than 1000 miles across (thats being generous).
Whats the deal?
and could you give a brief summary of power levels in the buu saga? Ive seen SO many different claims...
like, perfect cell= 25,000,000
gohan fighting cell at max=41,000,000....
but what gets me is this: goku's mega spiritbomb=100,000,000
are these numbers accurate?

viper2040: During the Buu Saga, a simple energy dan could destroy the earth. However, Toriyama had to make it more realistic, and therefore almost made the earth invincible (until they used an attack that could destroy it)

And those couple of powerlevels you just listed are 100% pure crap. I'd like for you to tell me which website had listed those powerlevels. Let me clear something up for ya:

Perfect Cell (according to the level you listed): 25 million
Furiza Form 4, 100% (according to mathematical calculations): 21.2 million

I'll add yer AOL sn to my buddy list. If I see you online, I'll IM you my powerlevels (which have been more or less accepted on a bunch of forums by ppl who have ten time more knowledge about DBZ than I). But those levels are crap. Super Perfect Cell's powerlevel is about 14x higher than what you listed him at. SSJ2 Gohan's powerlevel is also about 9x higher than what you listed him at. Goku's Chaou Genki Dama is about 7x higher than what you listed him at.