The gap between Messi and Neymar is indeed huge, but I don't think we should be measuring it by how many BdOs they will have won. Cristiano has only one BdO fewer than Messi, but we all know that the 3 vs. 4 difference doesn't really show the gap between them as players. Also, remember that goal count makes a huge impact on that award. Depending on how Messi and Neymar evolve in the next few years, it isn't impossible that maybe Neymar will acquire several BdOs, as well. But that doesn't necessarily mean he'll be as good as Messi has been / is. So far, Neymar has been fantastic, but there's not much to suggest he'll grow into an absolute football genius like Messi.