We all know Chris is it in for revenge. That was stated from the trailers. Wouldn't you be as well if someone murdered your whole squad or someone important to you? How is that any less important for the story? To me that brings more emotion to Chris because he has a personal gain to achieve. Chris getting amnesia is in no way going to lessen his plot. Chris had to stop Wesker in multiple scenarios. Has Leon ever had to stop someone multiple times from ending humanity? No. Has Leon life been at state more than Chris? No. Has Leon lost an important friend or partner? No. Chris has a harder life in or out of war, and more character development. You think people can stay the same forever? War changes people and sometimes for the worst. For Chris ending this terrorist attack will mean more because he's been through more. Its not about being a fan. Its about noticing who has the deeper role. And everything Chris has gone through Leon cannot stack up to.
If Chris would have his memories it would have made for a better game Cause he would be haunt by his past and the realization that what he tried to prevent happened any way. Would have been more emotional and had more Character development that way. But we'll see what happens and just hope for that best. Probelm with that is that revenge isn't about personal gain. Its about getting even. Taking from someone that took from you. Yea i agree with you it does give Chris more emotion but its the wrong kind. Chris is seen so far jumping in head first ( well from what we saw so far) this means that Chris is in this for himself and thats it, he doesn't even want for her to be held for her crimes just kill her. Getting revenge doesn't help you as a person you just become what you hate in the first place to get to him/her. Which by the what BSAA must have very lax protocols cuz Chris was drunk off his ass and and has amnesia and they say here's a handgun and a machine gun have fun lol
Back on topic Let address your points you made: Wesker only tried to end humanity once. Chris fought Wesker twice and only once did he stop Wesker. Wesker got away with Steve so Chris didn't stop him and that wasn't trying to end humanity that was for a sample of the virus. Has Leon stopped multiple people from trying to stop the world from ending yes and so has Chris. For Chris: Alexia and Wesker for Leon : Saddler and Jaiver Hidalgo
. Javier's goals weren't to end the world at first but the moment he became one with the V complex all he wanted was to consume everything which would have spread to the whole world. Has Leon's Life been at stake as much as Chris. Let's add it up.Chris: RE1, Re:CV, RE:UB, RE5, Re:REV ok now Leon: Re2, RE: dc, RE4( in which he was infected), RE: Degen, RE: Damnation and both are in RE6. Which brings them both out to 6 for both of them so answering your question no they are both tied.
Has Leon lost someone he loved or a partner. Yes 3 in fact. Leon fell in love with Ada in Re2 and thought he lost her forever. Leon lost Louis who was his only friend in RE4 and went after Saddler for it but also to get the sample which was Louis's dying wish. And Krauser was Leon's partner and they did get close near the end well from Leon's point of view. Chris Lost Jill which is huge But he got her back. Chris has had only two honest hardships in the game series that being the Death of Jill and now losing his memory. Leon and Chris have both the same amount of hardships in the field and both have paid their dues. Chris however takes it in doesn't learn from it and grow. He just becomes bitter and angry which i understand but when your into something this serious you have to always remember what happened but let it go to move on and to help others and prevent it from happening again. Thats alot easier said then done but it's true. Going on your last statement that this will mean more to him would be true if Chris remembered anything which he doesn't remember Raccoon City or anything with bioterrorism at all in the begin of the game at least. Like you said noticing who has a deeper role is important but it;s not Chris. To tell you the truth Emotional wise it will probably be Jake. Knowledge wise Leon. Chris is a tale of redemption.