as for Big mike, he might not be agile enough to move laterally as need to block the speed rush. JP would get crushed by a Kearse/ B. Smith style DE if M. Williams was blocking him at least once or twice in a game. I am pro-williams BTW.
JP will get sacked a lot this year, because he is inexperienced and he will scramble. It may not be Bledsoe/ RJ-esque #'s, but look at how much McNabb, Young, Brooks, Gannon, Cunningham, et al. were sacked early in the careers