I noticed this as well last night playing WL league, I am purposely running a quick PA in Pistol Weak and the dude is only sending 4, I have 6 blocking, and the LT does not engage and misses RE, and guy comes free off a 3-4 odd cover 3 blitz. Also, if PA is getting predictable, defenders can pass commit and if their blitzers have high play recognition, and it exceeds your QBs play action overall, running those plays can hurt you at times.
I noticed this as well last night playing WL league, I am purposely running a quick PA in Pistol Weak and the dude is only sending 4, I have 6 blocking, and the LT does not engage and misses RE, and guy comes free off a 3-4 odd cover 3 blitz. Also, if PA is getting predictable, defenders can pass commit and if their blitzers have high play recognition, and it exceeds your QBs play action overall, running those plays can hurt you at times.