Rt critic scores are, imo, one of the best rating scales. Think of it as a percentage chance a fairly average movie watcher is going to like this movie. It's not saying "this movie is 75% good". It's 3/4 reviewers felt it was worth watching, and does not comment on if they thought it was amazing or just okay. Marvel stuff tends to score high because mostly, despite not being some peak cinema, it provides an entertaining experience that earns a passing grade from most people. Movies that are more niche tend to get a lower score but that doesn't mean they're bad, just more niche.

I like this because it's easy to understand what it means with a little research. Most game scores don't do that and I find it annoying