Well, I must say it's been fun!
I'd heard that Bills QB Jeff Tuel has the highest QB rating in the league at this moment in time, and I wanted to know if that would stand up against the same conditions Kolb and Manuel must face.
Despite being called stupid, a troll, and a closet racist, I still want to know. It's called the scientific method: you put the variables (Kolb, Manuel, Tuel) in the same beaker with the constants (first-string opposition) and see who does and doesn't blow up when conditions are replicated for each.
By the way, to the poster who implied racism, my question from the start (see "veteran experience" above) was always about three contestants, two of whom were not black. To him I say that it takes a dirty little mind to find anything nefarious in the question I posed. Shame on you.