It's been talked about and mentioned everywhere what an exceptional court vision Jeremy Lin possesses. I think Melo's court vision is also very good. Lin's court vision is better but Melo is not chopped liver. The bullet passes and the lob passes are awesome.
BUT
Melo needs to work on his delivery. Lin's passes hits the target in their hands and in stride where their next move is to shoot. With Melo, other than the lobs, his targets need to catch and gather themselves before shooting which enables the defender the opportunity to recover.
Lin's passes is very similar to what Eli Manning does. They throw/pass their teammates get an opening/score. Lin has made JJSkinny into an offensive option. Another comparison is Melo's passes are more the Elway variety where he drill his WRs. Lin is more Montana.
Melo's bullet passes are pretty to look at but it does not help players like JJSkinny.