That's quite a difficult choice, but I would go with Mr.5. Even though he had quite an interesting DF, but he wasn't good in its usage. Hope we will see him later, but more developed.
that one is hard cuz we didn't see Burgess and Bart potential. so i'll give the win to chopper.
I believe Chopper can have a chance to win this group, especially since after timeskip he powered-up considerably. He can control his Monster form now and in this form I believe he can take any of his current opponents in this group.
I think that Jean Bart can take the second place in this group as he seemed to be second strongest in Law's crew after Law himself, so I do believe he can handle Jesus Burgues, especially since he didn't show anything and we don't even know if he has any DF.
I'm going with Jean Bart. Ha! Ex-captain, ex-slave and now a relatively newer member of the Heart Pirates. I just get the impression he's a real beast when he wants to be in battle. I'm sure Chopper would cause a lot of problems against the other pirates in this match up but most of his strength and ability relies in short bursts and if that rumble ball fails...then he'll be easy prey imho to J. Bart.
Gomenasai Doctor Tony Tony Chopper!
The doc would probably make it through as the second fighter though...
jesus burges is weaker than the others,imo. surely chopper is the boss here!
imo jesus burgess is rlly underestimated,alone that he is in BBs crew should be enough to say he is stronger than jean-bart(though i like him) and i think as of now chopper wouldnt be able to beat him,and even later on i think he will be a opponent either for sanji or franky which i rate higher than chopper