First off I figure he's going to be a star period. As in household name. Guy is a stud and that won't change no matter what team takes him or asks him to do. Also it is almost inconceivable he's there at 36, the guy stands out like a sore thumb among the rest of that group IMO.
But he looks like a stud at star for us for sure. My comp for him is Jimmy Ward. Very similar in their skills being good in both run/pass, though Branch hits harder and probably has bigger upside.
I think Branch has a chance to be great though. He's got that kind of talent plus instincts you need to be a game wrecker. Those don't come along too much at safety but boy when they do the team that hits on one of them sure gets a big payout.