I actually like that it links to the revision history instead of the user profile, because it reminds me that the post is a CW and the user displayed may not be the actual author of the post.
Typically when I click on a user profile link from a post they posted, it's because I want to see something about them in regards to the post they created, and it would be misleading to go to a profile of a user who didn't actually create the post.
So my vote would say no, don't do this because when I click on the name in the lower-right of a post, I expect it to take me to the person that created the post, not to the person that "edited" it the most (and as I found out a while ago, SE's "algorithm" to determine who contributed the most to a post is quite flawed).
If you really want to make a link, consider linking to the creator of the post in addition to the highest contributing user, such as
156 revs, 44 users