Teams aren't winning with defense like they used to. The game is being won obviously with a top QB combined with outstanding receivers. New England, New York Giants, Pittsburgh, Atlanta, New Orleans, etc. As much as I like Dareus, a good DT isn't worth more on the modern football field than a good WR. And without a doubt AJ Green is that type of threat that makes life easier for that QB.
But in Buffalo, Nix has exactly 1 pick in the top 3 rounds at TE or WR, never took a QB, and the time will come when it's proven his old-school mindset didn't fit with the modern game. And this is coming from a guy who liked the Dareus pick, like so many fans did at the time. Problem is, Nix is getting paid to be no less than at or perhaps ahead of the curve. Instead, he remains behind the times and spent a lot of resources building a (flawed) defense while neglecting the offensive skill positions.