I think Numbers are harder for Chopper to fight than the Jack/Queen.
Against them, he doesnt have the size advantage and he would have to resort to tricks to win.
On the other hand, we have seen nothing new from Chopper and he surely could have some tricks up his sleeve.
Chopper has always been established as a weak characters...
Far from it...
Chopper has gotten more conclusive fights than Sanji did...
Drum Island - Chopper has his 1vs1, Sanji doesnt.
Skypiea - Chopper has his 1vs1, Sanji doesnt...
In Enies Lobby, Chopper's MP was overkill, it would have wrecked probably all CP9 members if it were to land a hit on them.
Compare what O-Lin did to Queen in Udon and what Chopper did with one slap, I see a lot more blood from Chopper's hit.
Or perhaps hits from Marco on Queen's Zoan, they dont look as impressive as Chopper's slap...
Chopper's raw physical strength is no joke.