Yea carter is at his best blitzing and coming downhill in the run game. You put him in space or get him in coverage then that's when problems occur.
You really dont seem like you've watched carter, about his only weakness has been coming downhill to make tackles in open space, other than that his pass coverage skills have been on point, qb's hardly ever throw to the guy he's covering. With him going into his third year, im sure he'll improve to a certain degree, he has a chance now to be among the elite!