Why is this rated average?

Just rated a five for bạn but the things that tend to bring down a rating (crediting, descriptive title, keywording, and the possibility of a duplicate) seem to be okay. I'm not really on the spot so I can't speak to the possibility of it being a duplicate but the only thing I can think to add is maybe some thêm to the keywording, such as MTV, ngọc lục bảo dress, green, red carpet - just to make it easier to find again. I tagged it for bạn (does that feature work yet?) but I think it's fine. bạn could have somebody just upping their ratings count and being a troll about it. Don't worry, something evil will eat them.

Edited because I cannot spell.

Well I guess the image credit probably isn't accurate enough for some people. And the những từ khóa could be a lot thêm descriptive. But I'm not sure if that would lead anyone other than a troll to rate that image one. Unfortunately if people don't say why they rate something low then we can never really know why.