What happened to Carmelo Anthony's career? How good do you think he could be if he ped more and played D?

Here's the thing w/ Melo, he's more of an all-star than a superstar. The only thing he can really do is score. He doesn't p, rebound, play D, or have a leader's mentality. He has great potental to be a superstar but he has to do these things listed and maybe even more to be a true superstar. It's not only me who thinks this, even Charles Barkley has stated my exact words on NBA on TNT.