Neymar has great potential and there's no reason for him to be better than Suarez. Honestly they're two different players.
Neymar is a ronaldinho-esque player - tricks, speed, lots of flair. While Suarez dominates as a striker that has great movement and has vision, combined with good scoring technique that probably makes him arguably the best striker in the world as he is so all-rounded that he easily adapted into MSN. (Kun in my heart)
Suarez has already proven his worth by dominating both BPL and BBVA.