Actually no I don't run it all the time. In fact I use the Chiefs with the Texans offensive playbook and it does not even have the wildcat in it. I played two games recently and decided to try the Chiefs offensive playbook which does have the wildcat and I used it twice in each game, once per half, which I feel is realistic and in line with the NFL. So since the game has been out I've run the wildcat 4 times.
My comment was based on the fact that I have no problem stopping it. I find that blitzing my corners and manually blitzing an MLB does the job. What works for one guy may not work for the next.
Stopping a certain play has everything to do with learning how to play D. If you select the wrong play you will get burned, plain and simple. Wait for the opponent to select his play on offense, then select your D accordingly, then read and react.
Oh, and just for the record, I am as sim as it gets. Wins and losses mean nothing to me, playing a realistic game of NFL football means eveything.