Tom Lehman's win total was pretty modest but, at the time he won the Open at Lytham, he might have been the best player in the world. I don't think you can say that about Steve Jones, Todd Hamilton, Ben Curtis, etc. Lehman very nearly won 2-3 U.S. Opens and was a force in the Ryder Cup. It is surprising he only won 5 times.
However Lucas Glover's career turns out, I don't like the practice of evaluating a course or a tournament according to who won the event. Would you judge Bethpage differently if Mickelson had won instead of Glover? It might have been a better story, but the fact is that this year's event was screwy because of the weather. Royal St. George's if Bjorn had won instead of Curtis? Royal Troon if Els had won instead of Hamilton?
This notion of supposedly fluke winners bothers me too. Ben Curtis, for example, has turned out to be a very solid player. Someone like Michael Campbell has been, on and off, a world-class player for some time. The only tournament I can recall where the set-up really skewed the result was Carnoustie and, even there, you have to give credit to Van de Velde for having played well for 71 holes on a brutal course and to Lawrie for putting up a good number on Sunday and hitting one of the best long iron shots I've ever seen on #18 in the playoff.