It's not really the putter. In general, it's the putting stroke. It's the ability of the golfer to putt that determines how many putts he's going to make. Tom Kite makes more putts than most golfers because he's a better putter, not because of his putter. They're pretty good players, but they can't become the best players because they have never had the discipline to learn and develop consistent techniques.
Golf is really about repeating.
It's not a game of God-given talent or strength or ability or athletic prowess. It's a game of being able to do what you expect to do and it's a game of being able to produce anticipated results. I think that should give non-athletes great heart and encouragement. It's a learned skill. It's not a science, but a good dose of science doesn't hurt, because a true understanding of what you're trying to do makes learning so much easier.