Trevino obviously had a ton of game, and if given the chance in the modern day I doubt he would have any problem winning. I tend to believe that great athletes like Trevino, Watson, Jack, Tiger, etc... can find a way to win no matter what as if they are wired to do nothing but.
I do have to say that while a fantastic player, I find few other golf personalities more annoying than Trevino...shut up and hit the ball.