I agree with that. To me this is what makes golf similar to baseball: the golf swing, the hitting stroke and the pitching motion are all skills that require a huge amount of repetition. It's like training the body to be a machine, to do the same thing correctly over and over. It might take only one small thing wrong with the mechanics to cause bad results. Most golfers, hitters and pitchers are constantly finding it and losing it and finding it again. They get red hot for a while, then they go into deep slumps for a while.
None of that has anything to do with clutch. I just find some of the similarities between the two sports interesting.