You guys keeping bringing up what Chris did in the Umbrella Chronicles, but it seems you're avoiding what Leon does in thte Darkside Chronicles...
Because it's your job to bring up Leon's great deeds, we only support Chris!
No, but seriously: Does "biggest" equal "most dangerous"? If so, then we can end this discussion right away because Chris is bigger than Leon, case closed. But I watched the Javier boss on YouTube a while ago, and yes, that BOW is big, but... well... correct me if I'm wrong, but I got the impression that it doesn't really do anything. Just like all those very, very big nightmares in the RE universe, it attacks once and then leaves you a minute or so to shoot it until it attacks again. If those big monsters did make use of their full potential, Javier would have crushed Leon in two seconds, Nemesis would have impaled Jill's face the first time they met, Claire would have been eaten by Birkin's fourth or fifth form (if an ordinary student like her could even make it that far) and Alexia would have destroyed Chris effortlessly... Talking about Alexia, that was definitely the most horrible boss I ever had to face - and who finished her?
Chris and Jill couldn't even beat T.A.L.O.S. alone...They needed Wesker's help from the sidelines...
Didn't Manuela help Leon and Krauser too by providing her magic boiling blood?
Don't get me wrong, I'm not saying that Leon is weak or useless or anything... I really would prefer to have him on my side rather than against me if he was real... But I still think that if I ended up on the wrong side of the force with Chris coming at me, I would be more afraid of him than of Leon... Of course this is just a thought experiment anyway, because I'm the goddess of death and don't have to fear anyone, but... you know.