Yeah, but saying 6-3 isn't genuine either, b/c then you're disavowing Crist of responsibility for putting them in the hole to begin with.
And there is a big difference between coming into a game behind, and being the starter of a game when the opposing team returned a kickoff for a score. In the latter scenario, you're still the guy that got most of the first-team snaps all week and the guy your coach formed his gameplan around. In the former, you aren't. Rees came into those games playing from behind, after not getting the majority of the first team snaps, playing with a gameplan that was A. designed for Crist and B. probably had to be scaled back once he was in the game precisely b/c he hadn't been the first team QB all week.
I'm not saying his play in those 2 games are meaningless, but there're very good reasons that the QB who started the game is the one who gets credited with the final result. I can't look at him as 6-3. He's 6-1 as a starter, with play in two other games where he had some touble, but was STILL the reason they came back in at least one of them to make it interesting at all.