Because you're right, maybe he isn't the best pure rapper ever.

But he is the best pound for pound songwriter his genre has ever seen. Go peep his live show for proof. The dude garners reactions even from album cuts like PSA and U Dont Know

He's a fantastic songwriter/song creator whatever (one of you donks will nitpick-"but he doesn't write!")

Maybe around here people will disagree or at least not find it in themselves to admit it, but at the end of the day dozens of great songs trump just great verses