it looks wide. not good.
its smooth as hell. bad taper too.
don't confuse a wide, thick back with a great taper
with simply a wide back. big difference.
It looks excellent. He has a wider back here than Coleman. Nasser has gone on record that he felt sometimes he didn't get the condition in his back to match his untouchable front . However, to say his back sucks is ridiculous - Coleman's calves DID suck btw. His hams, glutes and calves make him far more impressive in the rear poses than people try to imply.
EDIT: I notice that you select a closer pic in better focus of Coleman's back. That said, I have never said Nasser's back was his best bodypart, simply that it is much better than people give him credit for.