Currently there is no filter to distinguish models from low and high poly.
Being that some artists use the website to learn, it's quite vital to differentiate between these two.
Perhaps a number scale of polycount in an advanced search mode could also be implemented. Separate from a simple (general) low-poly and high-poly filter.
Additionally, is it possible to de-triangulate models that have been uploaded?
It would reduce the cluttering of models and allow users to focus on quads and their edge flows.