Just chiming in to say Leon would beat Chris in a full out fight (only take movies or cutscenes are cannon BTW; little gameplay scripts that may or may not have happened don't really make sense as feats). People keep saying Chris "beat" Wesker, but I think we should examine the context of their encounters. Chris got hilariously stomped every encounter he had with Wesker, right from their first fight in Code Veronica. Chris had help from post RE3 Jill the next time he fought Wesker, and this time they both got stomped. Chris almost died only to be saved, and Jill basically did die (though survived due to Weskers experimentation). Then, every time he fought Wesker in RE5, he had help from Sheva and they both still got hilariously stomped. There were multiple times Wesker had Chris dead to rights but didn't kill him due to villain monologuing. There was one point where he literally had a gun to Chris' head. The only reason he beat Wesker at the end was Weskers bonding with Uroburos taking away his speed and effectively making him manageable. Even then, Chris had to be given a rocket launcher to stop Wesker from dragging his chopper into the lava. Chris was never once made out to be Wesker's equal. Not even close.
Leon taking out Krauser was more impressive. Not only was he solo, he was completely taken by surprise and at a disadvantage both times. Krauser was faster and stronger than he was by a ton, and they both had comparable training. Their final boss fight was an arena laced out with traps and all kinds of advantages for Krauser. Even their first fight that ended with Ada saving Leon was them fighting nearly even, and that was an already mutated Krauser.
Leon did as well against Krauser in their fights through pure skill. That's more impressive than Chris getting stomped by Wesker five times. So was Leon being a lone operative for almost the entirety of RE4. Chris always had help from one of his partners or various BSAA field operatives.
Chris even needed a partner and two miniguns to take out a single El Gigante. Leon took out multiple solo throughout the game, and one point even fought two at the same time. Chris needed a partner and miniguns to take out the water BOW he and Sheva encountered in RE5. Leon used harpoons to beat his (though there's an obvious size difference so that second point is kind of badly illustrated; just pointing out how Leon always feels like he succeeds as an underdog).
All this is before we even get into all the movies. Leon was the lead in every single one, so that's afforded him all kinds of insane feats. Remember him getting smacked a football field away into a metal wall by the G-monster in Degeneration? Or the insane abuse he took from the Tyrant in Damnation? Or the close quarters battle he had with the intelligent tyrant in Vendetta (this one was flat out ridiculous, and we've never seen Chris do something like this)? He's even got the Infinite Darkness show coming next month which will probably give him even more ridiculous showings.
People are also ignoring the context of their RE6 encounter while twisting what was shown on screen. Chris was on a warpath trying to kill Ada the entire time. Leon was clearly just trying to control the situation and calm him down. That entire fight also showed them to be obviously even since I'm assuming the devs didn't want to piss off fans of either. Leon dodged Chris haymaker, Chris dodged his sweeping kick, grappling started (which is something Chris really should have had no problem with), Chris tried to knee Leon twice which Leon blocked both times, Leon twisted out of Chris grab, Chris threw Leon out of his grab, Leon rolled out of the throw, and they both got their guns up at the exact same time. There was no damage put out either way, and the only one who was indisputably going all out was Chris. Keep in mind that this was a straight out H2H fight, which IMO Chris should have bodied Leon in.
Chris is great, but Leon is on another level