The average is skewed heavily by 50 merits from theymos for this post: https://bitcointalksearch.org/topic/anonymous-atomic-swaps-using-homomorphic-hashing-4980960
This might be not sustainable.
So if we removed those 417 from 1266, his average of Merit/New post would also reduced from 3.3760 to 2.2640
It would be interesting to see a ranking of users who received no more than 2 merits from other users and no more than 10 merits for a given post. That is, users who are constantly receiving merits for common posts. Which are neither extraordinary nor outlier, but still produce content interesting enough to receive some merits.