Nas can't see none of those guys even with 3d glasses on in High def. he had a strong 90's era and been hit and miss since. problem he faces is that while he is one of the best MC's Ever IMO, he also fell off and had his time. right now you can get Nas for fire sale prices because he played himself out.

and also unlike those cats you mentioned they are true great artists and were dominant for a particular time in there respective styles of music making, Nas never was dominant, but steady and had a chance at more, however he stopped making interesting music a long time ago.

Nas been living off his rep for over a decade.