I know all the purists will say, but its great score separation.
People who understand course design won't say that great score separation indicates a good hole. A good hole will have good score separation, but there are plenty of terrible holes with good score separation. There's a hole the pros played a couple times in the last few years. It was a really tightly wooded par 5 the first year, and was 400'. There were too many trees, and there were some 2s. There was a great scoring separation and no one thought the hole was good. Most people said par was set incorrectly. Some of the more seasoned course designers (biscoe sticks out in my mind) pointed out how the hole was designed poorly.
The next year par was changed, and I think some trees removed, but it still had a large scoring separation. No one thought the hole was any better (although the people talking about par being wrong generally stopped talking). It's just a bad hole.