Another factor to consider is that Lee did have a considerable lead. I am watching the last few innings (since I went to bed) and even though fatigue is setting in a bit for him, a lead like that lets a pitcher get comfortable, messes up their flow (due to the longer innings away from the mound), etc. I think Lee's line would have been a bit better if the Phillies didn't give him such an easy opportunity to walk away with a W.
I love it though, we at least get a game 6.