I have no real reason to prefer one team over the other although I do think Peyton is the best QB in football and that's from a NE fan.
As far as the game it was very entertaining and I agree that there was no real controversy about the penalties in overtime. It is regretable when there are so many of them but I didn't see anything particularly egregious. However what really won it for the Chargers was winning the coin flip.
I mentioned this elsewhere and it looks to me that Rivers is going to be a good one for quite some time. If LT can stay healthy then I think that puts the Chargers in good position for a number of years. But as you said it's doubtful that next weeks game will be a pleasant one for Chargers fans regardless of which team they play, although having no particular love for either the Titans or the Steelers, I'll probably be rooting for the Chargers as the underdog.