I don't know that Sam Bradford is a future superstar, but I will at least say that I recall him performing pretty well in his rookie season, and going through a sophomore slump isn't unheard of. The whole team seemed to fall back, not just Bradford. And as for benefit of the doubt because of college, actually yes I do think that he does and should receive some, especially considering the conditions under which they got him. Unless you know the guy has major health or work ethic issues, or he's consistently setting record lows for QB performances, you don't give up on a first overall pick QB after only two years, especially on a team that still has a lot of building to do. Maybe next year is the real proving grounds but it's hard to justify flushing that large of an investment with such a small sample size to look at.
That'll probably be easier from this point on, since even first-round rookies won't be making the same ridiculous amounts of cash that Bradford got, but for this case it would be really irresponsible to shove Bradford off from a financial standpoint.