Just because a handful of players were able to comeback 100% doesn't everyone with a torn ACL will able to do the same. Everyone is different. I'm willing to bet my left nut that Gurley will drop to at least the 3rd round. Either way, the Panthers are not going to waste a pick on a RB who is injury prone. We already have backs who can't stay healthy as it is. Plus, we have more important areas that need to be fixed that drafting an injured RB.
More than just a handful of players are able to comeback at 100%. I'm willing to bet for every player you can name who didn't come back successfully from an ACL injury, I can name one who did. And I mean recent (within the past 5 years), and only ACL tears, not mulitple ligament tears. Those injuries arent what they used to be. Gurley will be back to sprinting by at least April. I tore my ACL 10 years ago and was cleared for contact 6 months after my injury.