playing on All-Madden, Hardcore playcalling, and post patch #2, I don't see the cpu send all out blitzes or blitz and leave themselves vulnerable on every single passing down.
Playing the Texans last night and it was fun in the 2nd half of that game trying to decipher where the blitz was coming, if at all in passing situations. They blitzed corners, a corner and a LB, walked a safety up and blitzed him, zone blitzed, and they showed blitz but did not send it thus causing me to hot route a guy or two to routes that were easily covered by the defense they called.
Very much enjoying how the cpu mixes up his coverages, blitzes, and overall defensive scheme/playcalling since the 2nd patch.