Ive only used the rating scale a few times in my life, and only when talking to other guys about what level of attractiveness i thought a girl had. Obviously everyone who is looking for a potential spouse is gonna have a "attractiveness" barometer they have built in that gives them wooshy feelings based on its internal rating, i have that as well, and i would say that is usually the only thing i let happen when looking at a girl as far as the physical side goes. Though i do do the "well, her hair is really nice so the mildly short issue is countered for." But anyway, ive learned its a waste to set ratings on girls, the probability that "she is the one" is so incredibly low that ur best off looking at them as a friend, though we should be treating our sisters in Christ with absolute purity anyway. I dont ever recall giving a number rating to a guy, though if a group of guys were trying to build a friend's confidence, we might say something like "oh, come on man, u probably hold as an 8 in a girl's eyes."