Zoro said:
Good Boo is much above Majin Vegeta. Where are you getting this 2.5x Teen Gohan thing from? Good Boo is probably 35-40% of Fat Boo's full power, placing him well above the SSJ2s.
Good Boo didn't really do anything impressive for you to determine that.
http://www.neoseeker.com/forums/88/t2118838-99-accurate-ssj2-gohan-fat-boo-gap/
Argument: Goku Ssj was 3,000 Kiri while Yakon was 8,000; the scale isn't linear.
Counter-Argument: The Kiri maxed out at 3,000 Kiri. The scale doesn't contradict anything.
Conclusively, the feats support it. Innocent Boo is completely unable to single shot Majin Vegeta SSj2 -even with an off-guard, point-blank, angry explosion that was meant to cripple Vegeta. Goku SSj3 was only using Super Saiyan 3 to stall Majin Boo so Trunks could get the dragon radar.
Akira Toriyama would not have placed this chart here unless it was for a very specific purpose. As for the original post, a much stronger Broly should be more then capable of giving Innocent Boo a fairly good fight on his own.