Mos Def " Jay-Z should defend his G.O.A.T title"

I was just searching around the internet and saw an article which from a interview with Mos Def in 2009. In interview which he says Jay -Z should defend his 'greatest rapper alive' title. Its from 2009 I just wanted to see people thoughts about it. He says in the article he would pick five artist to go up against Jay-z, Kanye West, Lil Wayne etc. The artists he said were myself, Black Thought, MF Doom, Jay Electronica and Nas. Them five artist together would be dope I think. This is all from last year it wont happen I just wanted to know people thoughts on it and interview video is below of it.