@ReiKai: i'm gonna copy past something about i said about Broly what i said in a diffrent treat was:
Broly is overhyped as hell, people are so impressed that Broly fought againts the Z Fighters all at once but they forget that Super Perfect Cell could easly do the same. When Super Perfect Cell emerged from the dust and one-shotted Trunks, Vegeta went mad and charged Cell whith everything he got, blasting him over and over, but Cell simply smiled and one shotted Vegeta to the ground like he was nothing. Broly beating all the Z Fights at once isn't something spectacular. Some people say that Broly was holding back and was toying with the Z Fighters, but if you watch the movie again you see that Broly becomes visible anoyed at Goku for surviving his attacks replying with: *Why won't you give up!* *Your persistence is anoying!* Broly wanted to end the fight but he could't one shot Goku. If you remember the Cell Jr's, each Cell Jr was as strong as Vegeta/Trunks, they where all fighting equally, yet when Gohan transformed into SSJ2 he one shotted them. Now if people say that Broly is just as strong a SSJ3 or SSJ4 or hell even Gogeta... then Broly would have killed the Z Fighters with a mere hand gesture, releasing his energy would be enough, remember when Goku did it with the Meta-Matcha's in the movie with Lord Slug it would be just like that, Goku or Gohan in the second movie couldn't even harm Broly if he was that powerfull, hell those triple kamehamehame's would be futile. Remember when Janameba attack Gogeta and Gogeta wouldn't even flinsh yeah if Broly was that powerfull he would't have any trouble with Gohan hurting him with a knee, or the Triple Kamehamehma. Broly is an impressive villian but he is nowhere near as powerfull as SSJ3 or even Gogeta as some people claim.
Now your where right about them attack first in there base form, but later on when they transformed, Super 17 attacked with his *Flash Bomb* and everybody was hit so hard they where reverted back into their base Form exept for Vegeta. Super 17 with one attack was enough to nearly end them and he did it with no effort whatso ever . Your underestimating Goten's and Trunks powerleveles, At the end of DBZ Goku said that Goten and Trunks should keep training because when Uub grows up he would look to them in leadership. Is Goten stronger that he was when is was a Kid most defenitly, you saw him train with Goku even after the Buu saga thats 7 years of training he had with Goku, Goku made him train remember, and your also forgetting that Trunks was with Goku the whole time fighting opponents like Baby Vegeta and whatnot, are they a whole lot stronger no but stronger still. So thats 4 Super Sayins + Majuub (who is stronger then al of them Baby even states this when he was fighting Majuub) and they where all brushed aside with one attack.