Well, some of them had legit handicaps, and I was surprised to see Tony Romo as a PLUS 3.3. John Elway was a 1.1 or something. But for a lot of them it was "estimated" which to me means they aren't recording ALL their rounds.
But you are right, they could be excellent with short game and/or hit it really long. But I think I could take Big Ben just looking at the swing sequences

. But as in football, he doesn't always win pretty but he wins
