R_J_K75
Legend
OMG! You are right! I have to go change my vote...
I haven't played a 5E Bard personally but reading through the class features they seem somewhat lack luster. I did have a player run one recently and even she said that the class was garbage, I tend to agree. I played them in previous editions mostly 2E and 3E and they were a lot of fun but I never cared about min/maxing my PCs I always like a cool concept over everything else.
As far as the OP, I think its almost too hypothetical to answer. Without giving it too much thought though my gut tells me Wizard is probably the ultimate victor. Isn't it a pretty common design concept throughout the editions that if they survive to higher levels that Wizards are by far the most powerful class, at least in theory?