Wait the kid said "D4c CaN BeAt TuSk!!1" but he didnt really say which act so if he's talking about acts 1-3 then D4C wins but aside from that if Funny Valentine could have won if he did some battle tactic or something
(obligatory not a manga reader) I honestly don't see what makes TA4 so strong. D4C is a dimension hopper and can partially manipulate luck, and presumably heal himself infinitely. what exactly can TA4 do against this?