What I think can be learned is an unending search for the QB that can win a championship. Denver is a team that doesn't stop searching. Another example is Seattle. They trade for Whitehurst, it doesn't work out, they go get Tavaris, that doesn't work they trade for Flynn. The 49ers don't care how Alex Smith cares, they draft Kaepernick and pursue Manning. Cardinals trade a very good corner and a second round pick for Kolb, they pursued Manning.
I think the Bills resting their future on Fitz is a mistake. He's not a super bowl champion type QB, the sooner we the FO admits that and takes advantage of the team we are building the better. It's just my opinion, but I think the days of giving Buffalo QB's 2 extra years to prove what we can easily see has to be over.