With only 35 rounds, I'm not sure the difference between all five scores is probably not significant enough to make any conclusions, except to maybe suggest that the five holes are similar in difficulty. No hole is significantly harder or easier than the others. Before looking at the stats, I would have guessed #11 was the easiest, and that #16 was the toughest.
Also, you can see that Tim Bert's experience was considerably different. In general, I am a good short iron player, which may be why my scores on #2 and #9 are about the same as the others.