Aside from section in bold I mostly agree:
The Bills were a middle of the road defense against the pass but did a great job generating turnovers, tying for 6th in the league with 20. The AFC East is pretty weak right now in terms of quarterbacks. Yes, you have Tom Brady, but Mark Sanchez and whomever throws the ball for Miami won't be huge threats. The opportunistic safeties accounted for most of the turnovers last year, and you can expect more of the same from Jarius Byrd and Bryan Scott. Drayton Florence is rock solid at cornerback as is Leodis McKelvin. On the whole this is a decent defense. With the editions they've made this offseason, it has the potential to be a very good fantasy starter, especially if the turnovers stay stable and the sacks go up as it looks like they will.
Florence is solidly not on the team (I suppose he could be resigned on roster if injury occurs post game 1 like Corner was in 2011) and I would not call McKelvin "solid". I do like the newest EDITION of defense especially the ADDITIONS (editor does not know difference between words).