S
Luffy is taking on top top tier kaidou, zoro will likely get yc1, sanji is taking on a guy with same bounty as marco
and while for luffy it makes more sense because of extreme battle with cracker, katakuri, doflaminog, sanji and zoro got enam/raid suit powers ups to jump from some low mid tiers enemies to high hig tier ones
and while for luffy it makes more sense because of extreme battle with cracker, katakuri, doflaminog, sanji and zoro got enam/raid suit powers ups to jump from some low mid tiers enemies to high hig tier ones