I hardly ever vote 10 on anything - in fact, my voting system is pretty strange. All maps have a 10 at the start, but as I play them I deduct points for things I dislike or add points for things I like. For example, having less than 4 difficulties made by the map's author means -1 point (a bit nazi, I know, and yes I know not everyone has all time in the world but damn things having four difficulties is a rule of the universe), being too boring, having a broken rhythm or annoying hitcircle placement/overall inconsistency are more -1 and etc; having an awesome storyboard usually means +1 (or more if they're really awesome, like in Don't Stop Me Now) and so on. But who cares about how I vote on stuff.
Sometimes become a normal person and vote as I should based on the amount of fun I had and the amount of flaws I noticed, but that takes too long to analyze. I guess.
I find these people who give 10 to all maps and to stuff I dislike really silly, but well... this is how the world works - opinions and opinions.