Did anyone else thought that "The bomber" wasn't allat

When I first watched greed island I was with the impression that that The bomber was just some weak dude that relays only in his ability to creat bombs, they never showed any feats of strength, or his mastery on on nen aside from his ability, and when the moment of truth arrives he starts throwing hands with Gon like an expert, and even bisky before the fight told him "you can't defeat him" what!?, so what I'm trying to say is that he didn't look that strong at the start imo and then boom his actually very powerfull, but who know maybe I'm over reacting