Practicality wise Eggman should stomp. He has planet destroying laser, Bowser does not have range to match that without VS memery. Am I missing sth, but King Boo, Kamek & Bowser Jr do not have have anything to match that range wise? Hell, is King Boo's sealing actually just slamming people into paintings? Its what he did in LM3. Kamek had spell that reached Peach's castle, maybe sth else too from Party games? Jr just hasnt done any huge range feats either. Wonder Flower is also ngl not a good argument. Its effects are random you know? Sure he could absorb Eggman's army... or turn into a Goomba lol.
Obviously this ignores stats and shit, but you need to give Bowser far more benefit of doubt. Unfortunately for here thats basically what other communities seem to think, that Bowser just outstats.
Also Sonic Shuffle items are waaay too new discussion topic I saw you Sonic thread starting to look at them for VS lol no way are they considered for BowserEggman debate.