Of course it can. It isn't hard to understand! 10/10 is the top tier in my ratings, and there are many games in my top tier.
A few months back in another thread there was a debate about this, and someone made the very valid point that on a 1-10 linear scale there tends to be a disproportionate number of games scoring above 5 in people's ratings (or in other words, 'average' games tend to get above average scores. If a game scores 5/10 people think it must be pretty bad and 3 or 4 out of 10 is viewed as downright awful.
Of course, people can rate games how they want but it is one reason why when I do my mini-reviews I don't normally give rating just +/- points (exception being this thread of course as them's the rules!) as ratings are so subjective depending on what sort of scaling the individual likes to use.