I would say two things First, his greens are often at angles to fairways. So, if you are on the wrong side of the fairway there is very little to shoot at. And second, his greens are often smallish, with sharp run offs on many sides. So, a ball that might land 42' from the pin on one green, may run away on a Dye green. Full disclosure, my experience is pretty much limited to much play (100's of rounds) on his five courses at Casa de Campo, and a very little play (one or two rounds) on a few others (Hilton Head, Ocean Course, La Quinta, TPC, Bulle Rock, Long Cove).