Is Lewis an upgrade over what we have?

Keenan Lewis:
(2012) Comb Tkls 71 Pass Def 23 INT 0 FF 1 Sacks 1 Career INT's 1 (4 yrs)

Patrick Robinson:
(2012) Comb Tkls 64 Pass Def 18 INT 3 FF 1 Sacks 7 Career INT's 7 (3 yrs)
Don't bother, everyone thinks P Rob is a bust and Red Thumbs anyone who thinks differently. Did he have some blown coverages this year? Yes. Did he have terrible safety help over the top? Yes. Was he playing in a scheme that didn't put him in the best position to succeed? Yes. While I don't think P Rob is "elite," I think the guy continues to show improvement every year.

By no means am I saying Lewis isn't an upgrade. He just isn't going to come in and magically fix the true issue this team has, our horrid Safety play.