Looking at "verified audience" ratings, the overwhelming majority of positive reviews marked as 'This is a verified review from a moviegoer that bought a ticket and wrote a review through Fandango. Probably not a surprise, given that Fandango owns Rotten Tomatoes.
These positive reviews are also, by and large, very basic one-liners. The critical reviews, meanwhile, tend to have more meat on them. They were also the only reviews I've seen that actually corresponded to Rotten Tomatoes user profiles (as in those who actually have accounts on Rotten Tomatoes itself). Unfortunately, their website's rating has horrendous filters, so you can't search by rating score.
Metacritic, meanwhile, is showing an audience user score of 5.0 out of 10.. IMDB has 8.4 out of 10.
At any rate, Rotten Tomatoes reliability for audience scores should have been torched after a laugher like this:
