It is best to take all RFs with a pinch a salt as I often find some of them overrated and does not tally during visit. Moreover, one man's meat is another man's poison.
Some standards are low while some are high. My 9/10 could be a 6/10 to you. Some obviously does not provide as good a service but often see 5* FRs. I am like, WTF? Or am I not just yandao enough. Some to me look like 5/10, I have seen MRs rating them 8.5 to 9!?
Anyway, it does not bother me. I read, visit, and rate RTM based on my standards. It is better than reading no MRs at all. Just remember to take it lightly.