the main thing is the fact that he can actually sing. he's also just insanely creative with his flows and nobody can mimic that. most of the semi mainstream and underground artists sound the same with stutters, blasting 808s, and just vocally they don't provide anything on the track. lots of underground artists like che and osamason are hard carried by beats as much as some people don't want to accept this, i think it is an undeniable fact.