I'm on team Chris, as much as I like Leon, I think his heart is thinking ahead of his brain on the terms of sparing Ada. Chris on the other hand, is a lot more aggressive then the past, but that is because he has never gotten a break from umbrella. After witnessing Ada's antics (murdering his crew) and sneaking around for her own good, it is no doubt that Chris will be angry with her and want her to die. I feel like Leon has to find a way to "let her go" because she is using his compassionate side for her advantage. my opinion, Chris should have the right to kill her off, he has enough to worry about besides some nutty spy. Leon will not be happy with Chris but he knows how much Claire loves Chris so I don't think he will try to kill him, Chris (filled with rage) might want to Finnish Leon off but stop himself because he knew he saved his sister and he has good means. Overall I think Chris and Leon will both spare themselves and Ada will make a get away.