Melo actually said that he believes he's a better scorer than Steph Curry and LeBron. Whether or not he actually believes it is probably a different story.
There is no way he's a better scorer and it's not even close. For starters, Melo is the only one out of the three not to be in the playoffs. Curry and LeBron are such good scorers they can and do carry their team's into the playoffs.
On top of that it's just fact that he is nowhere near the shooter that Curry is and can't do the things that LeBron can. At the end of the day it's just another stupid thing that has come out of Carmelo's mouth.
You're the best scorer on your sorry ass Knicks team, although Porzingis is coming for you.