This argument is so redundant, Bo Burnham (who I think is brilliant by the way) actually names Tim Minchin as one of his inspirations on his own facebook page, "some of you may have heard me talk about tim before. a brilliant pianist and songwriter - to put it most eloquently, and i honestly believe this - he kind of does what i do except he does it 100 times better than i do it." and I'm sure Minchin would be equally praising of Bo.
Seriously, what is the point in arguing over who is best between two very talented and intelligent comedians when you can just enjoy both?