Need Feedback : Approved PSD But WordPress Rejected

Hi,

I need some feedback from fellow authors. One of my items is recently rejected in WordPress category although PSD was accepted.

Demo
http://xvelopers.com/wp/themes/knowledge/

Feedback from Reviewer:
As it stands your item quality is just too low in comparison with other items in similar categories.

Please also check knowledgebase themes at ThemeForest. Is it really that bad as compared to others? your feedback will be much appreciated

Thanks