All users are divided into 6 categories depending on their ratings. You can not see voters’ names but these statistics allow you to see the category of people who rated your artwork and the rating they gave it. The higher user’s rating, the more valuable his assessment is. The rating is an approximate representation of professionalism. Authors with high ratings are usually artists with awards or with a large number of artworks.
Не рендер, а браузер, который просто уменьшил картинку, откройте большое изображение, там будет полноценный рисунков, с нулевым сжатием, его и будут оценивать, никто по маленькой картинке решение не принимает.