Protip-1: There is a salary cap in the NFL.
Protip-2: Do not shoot your argument in the foot. You're arguing that the Yankees' financial power and ability to buy an all-pro roster is okay. However, you then say that the Patriots are guilty of the same thing, which is essentially admitting that the Yankees are, indeed, guilty of buying all-pro rosters.
Protip-3: The Patriots roster of a few years back consisted of a powerhouse defense, and a powerhouse offense. However, there were several guys who weren't exactly expected to be "all-pro" material. The Yankees, however, have this:
Johnny Damon, Derek Jeter, Hideki Matsui, Alex Rodriguez, Mark Teixeira, Nick Swisher, Jorge Posada, Robinson Cano, Xavier Nady. So basically everyone in their lineup is all-star material, or has been at some point of their career, besides Melky Cabrera. So you tell me, is that a fair comparison? Either way, you still admitted that teams stacked up the ass are unfair