I'm doing the 52 games a year challenge and as part of it I'm also giving games a score and writing a blurb about them. I've yet to have a situation where I feel a game is sitting in the middle of a rating.
I mean it's not hard. 1 is shit (i tend to never give this score unless something is just completely broken or devoid of any redeeming qualities which is rare even in a really bad game), 2 is bad with flashes of mediocrity, 3 is an average to above average game, 4 is a good to great game but not without its flaws, and 5 is just a great experience even in spite of any possible flaws or issues.
again, not hard at all.
and don't get me started on sites that just give a rando number for a score. I mean wtf is an 7.6 game supposedly do better than a 7.5 game but not good enough to merit a 7.7?
::breathes into a paper bag::