People need to realize that Wesker is only a relatively powerful character in his own Universe, Resident Evil. And Resident Evil is a very weak Universe.
__________________ And from the ashes he rose, like a black cloud. The Sin of one became the Sin of many.
Weaker is not aligning a big ass tank around like a toy. Put him against Bryon and he'll lose his head. Jin fight weak enemies like Jack-7, those machines move very fast, you can tell by their intro before a fight and while playing with the character. Jack-7 is some what based off of speed. Then there's Yoshimitsu, Lars, and both Raven's with their speed and I don't see how Weaker could do anything but complain about being blind because there's tears coming from his eyes when he sees Jin as his opponent. Jin wins easy.
Jin has Hit threw tankier, been hit by stronger and has hit much faster. I don't see how this ends in anything other than Wesker being picked apart. Even if he mutates as he does, again he has fought more monstrous and would handle him in the end.