The soft zones that WIS uses on defense make it unlikely that a position will matter. The engine doesn't seem to differentiate between anything but inside or outside on runs, and not even that on passes. I think that individual player stats come into play, and even spent some time converting LBs to DLs to get very fast pass rushers, but even with that huge advantage in speed, I could never see a particular trend that would tell me that it was working once 3.0 came out. In fact, I can't see any difference between any level of blitzing and not blitzing at all. Wish I could be more help, but the data just isn't there.