It was so evident to me in my last h2h game. I ran cover 1, cover 2, and rarely cover 0 but always dropped Peppers or Derwin into coverage as a user. .
So I go cover 1 to start, 4 and out. Lockdown cvg. I ride the clock because I like to play sort of like a real game, I don't need to run up the score, just use clock to my advantage. Halftime I'm up 14-0. Credit to my opponent for hanging in there, 2nd half comes and I'm comfortably up so I go zone. My guys are all 93 zone minimum, I figured I'd be fine. End up winning 28-21 but his last TD came with 10 seconds left and he had no TOs left.
Still, had I stayed in my regular man based D I highly doubt it would have even been that close. I got torched in zone. I think I have up less than 30 yards passing in man and like 180 in zone.
EA really has to balance this out.