I have recently been congratulating a new user on the italian board for his astonishing Merit/Post ratio. This particular user is a well known expert user in the italian community, and already provided good content here on the forum, where hes new. So this ratio is quite expected. As hes pretty new to the forum, he asked me what is a great merit/post ratio?.
First of all, congratulations for another analysis. It's always good to be able to see things from different perspectives, to have an idea of how things are evolving.
Now, I think this type of relationship is very subjective and doesn't exactly mean that a user with little posts and many merits is better than others. Because a user who makes few quality posts and is not very active, who receives many deserved merits, will always have a better ratio than a user who makes quality topics and is very active (where logically not all participations deserve merit) will have a ratio lower.