Which character is best to beat challenge mode and how to get s rank?

the best character is Whitebeard and he can easily get high score
Ace & Hancock are good too

today I saw mostly whitebeard i'm not saying i'm right but that's what is saw but to me i'd rather use luffy in my opinion because he is the highest level because you beat the game with him and got him at a decent level but you should get the character you want to a really hard level because I tried challenge and it was really hard for me and my level was in the 40s

sorry I meant high not hard

Please don't report me if i'm wrong please