@neongamewave: No, Goku and Vegeta can destroy planets because they've been powerscaled at that level. Neither Cell nor Bills can be powerscaled to either solar system or galaxy busting. I don't care about anything else you wrote because: no feats = no feats = no feats.
I know I've joined this party late, but that logic is faulty IMO. If the author of a title says that a character can or can't do something, then their word is final, whether or not it is shown on panel. Especially, if they are the sole creator of that character. This works whether a its comics, movies or TV shows. The fictional creation is the just that, a fictional creation, and the author is free to add whatever powers, abilities, plot-holes etc as he sees fit.
And this actually works over and above on Panel feats. For example, Thor and Hulk have both been shown in the past to break and crack through Adamantuim. This was later retconned by Marvel so that all in all instances the Adamantuim was secondary, even when it was explicitly stated on panel that it was pure Adamantuim.
What I'm trying to say here is that authors are not called TOAA's for nothing. If they say a character they created can do ABC and D, then they can do ABC and D.