The thing you're overlooking is that quite often the highest rated aren't neccesarily the best images. There is still the situation where certain peeps rate each others regardles of how good they actually are! The same thing applies to favouriting an image, friends do it to each others so again it's not always a true indicator of quality!
I saw one recently that had ratings in the 60's but had a glaring error of the wrong brush size used in postwork so had a vertical line of smoke in the image which looked really bad quite frankly!
So highest ratings doesn't always mean "best".

Injustice will be avenged.
Cofiwch Dryweryn.