When Lowe is in the game teams only go to his side, pretty much. Prater has shown some skill, but Spievey is in a higher group right now. Prater has been solid, but not really lock down. The last pick in the Wisky game is a play that only Amari could make.
Often, Amari's run support is over looked, but he is the most sure tackler on the team. Watch some tape of this year when they run a sweep or WR screen to Amari's side. It doesn't end well.
With that said, Amari has missed a few easy picks. He had a pick 6 go through his hands late in the 1st half of the Michigan game. Odoms caught it and went 35 yards on the play, instead.