I think furbymac had it correct. A smooth, slow swing resulting in better accuracy will tend to provide you with a better score in the end. That's my experience anyway.
I don't hit long drives, but most of them end up in the fairway or at least on the edge of the fairway anyway. It made the game much more bearable than spending lots of time looking in the trees for a drive that sprayed out into the woods and then taking another stroke to try to get out of the forest. I would venture to say that more often than not, nobody is a John Daly when it comes to hitting the long ball.
If I could get my chip shots closer to the pin, my score would be much lower.