Yeah I don't get all this liability in coverage talk. That is media propaganda garbage. Firstly, Bama played a 3-3-5 defense. So they lined up Collins in man-to-man situations. Dude's not a corner, so yeah he got beat at times. Here, he will be playing in zone coverages, allowing him to use that speed of his to make plays.
Even if you bought the coverage garbage, we all know Collins will be a step up from Harper. Though I said before, I like Tillman to play safety for us.