Please note I am not ragging on Allen or saying it is all his fault, but as the QB you get the accolades for wins and the blame for losses - it's not all on him though. Certainly you don't loose accuracy; the only "change" I can think of is the half-time adjustments (taking away what you did in the first half) and the having to find a new way to beat the coverage, difficulty recognizing a new disguise in coverage, or super conservatism in play calling (which hasn't entirely been the case - depending on field position, down distance etc). We also are prone to some penalties and such...