I douobt Melo ever wins a title, he doesn't have the fire and I think college was enough for him. Big games he wilts.
That's a terrible response everyone says on this forum. The same was being said about lebron in Cleveland and pierce before KG and ray Allen. Carmelo is the best scorer in the league, get him on a talented team with good coaching and they'll be title contenders. He's playing with prigioni, Kenyon Martin, a cripple stoudemire, I mean I shouldn't even continue. The Knicks have around 0 talent.
Leaving character out of it, I don't think Melo is necessarily a "loser" but he's definitely not on the same level as LeBron or KG in terms of skill level. While he hasn't had great teammates to play with, he also doesn't make his bad teammates better like LeBron and KG do. Those two guys both score and are DPOY candidates every season, while also passing and setting up their teammates. Carmelo can only score.
The question is do you have enough assets to surround Melo with enough talent to win a title? Since he has more flaws than some other superstars, the task is a lot harder. The investment could then blow up in your face like it has with the Knicks. They brought in guys who were too injury-prone and too past their prime.
Personally I don't think Melo can be the best player on a championship team. It's possible, but the other 5-6 guys have to be really really solid and it has to be a year where there isn't another superstar team out there. Since the chances of either of those things are low, Melo becomes too risky an investment.