@niBBit: You may want to watch the Baby episode with the Japanese dubs on. It clearly states he was trying to blow up the earth in that blast but failed. Then later on they think he can do it when he is right on top of a planet. Great, so Baby Oozaru can only maybe blow up a planet as long as he doesn't have to worry about his blast connecting with the atmosphere. Lame. Yi Xing Long is only at planet busting. If he could go higher than that with a blast they would've shown it or stated it at least. But planet busting was the most he was stated to be able to do. Sure his magical negative energy could kill the galaxy eventually but that doesn't really help.
I see part 3 of my second post was ignored. Only by thinking power scaling extends to a non-canon source do you get that Vegetto and SSJ4 Goku are about the same. I spent enough time watching the dragonball movies to know that is false.They follow their own thing. As such I believe GT follows its own and so the only feats I can take for granted are what it displayed. If I use power scaling for non canon parts then it must extend back to the canon and so I could use movie or anime filler feats for canon dragonball characters. You see where the problem is with this? Basically I don't have to use power scaling with GT as it relates to the canon. I only really did it to humor people who are really into it. GT is an alternate universe, as far as it says and showed it can go is as far as I believe it can go.
One more thing: Birusu was stated by his superior to be able to destroy solar systems instantaneously and there was talk of galaxy busting. His job is destroying stars and planets. That's higher than GT right there. His speed is also higher than anything I recall in GT. If I have to go further I may but I'm done for now. I hope this at least showed you where I stand with GT. If you don't like it fine, to each their own.