Some men and women may rate their lovers, I have never rated any that I have had. Each relationship is different and each lover has their own good points. To me its the relationship that makes or breaks the sex life, the more you are in tune with your SO the better the sex will be. I have had a few one night stands and they were the worst for me. If you are not getting what you are wanting you need to tell them what you want. No one is a mind reader, if your relationship is worth building up then talk about what you want to get out of sex. If its not, then get out of relationship. telling someone how they "rate" is very shallow, if you can't say anything good about the other person then say nothing.