We have a completely new defensive system, one that emphasizes zone when Mo is a 'man cover', he's in his second year and missed a ton of time at practice and all of preseason and he was matched up against a qb who won 2 superbowls throwing to one of the better receivers in the league. What did anyone expect? Cornerback is a position that takes time to learn and play in the NFL. In the cornerback position, Patrick Peterson didn't look impressive outside of his returns. Prince Amukamara didn't look like a great pick his first year... but these guys are coming around. Give him time to acclimate to a new defensive style of play and let him get his conditioning back and then we'll be better able to assess his talent.