Royal
Connoisseur of Exotic Pictures
Not quite.That this movie is 3 times worse than prequel number 3?
RT is an aggregator. In that comparison it would mean that 3 times as many critics simply liked prequel 3 as did BvS. Theoretically they all could have only just barely liked RotS and BvS just barely fell short of pleasing them, the final RT score would still be the same even though the two would have been relatively close in quality to their estimations.
The better measure for personal use is to find a critic (or a few if you can) whose tastes closely resemble your own and consider what they have to say.