Toriyama wrote in the Bills could destroy a Galaxy, but has never showed it......And the fact that his fight with Super Saiyan God Goku was pretty much a regular DBZ fight, crashing through mountains, energy blasts yadda yadda.
Akira really needs to make the battles span much wider then planetary, because he isn't showing us a fight that SSJ Goku and Frieza didn't already replicate.
What has Bills done besides whoop up on SSJ3 Goku and Mystic Gohan? Buu did that too lol. It's too early to start weighing Bills' might until the movie comes to the states and everybody gets to see what he can do.