The curse had to have affected Neverland, because Hook was brought back to FTL and Smee was brought to SB. Perhaps Neal was visting our world as Peter Pan often did and ended up here because the curse hit Neverland while he was away.
Of course, then that begs the question where are they headed in the finale according to the titles? Creating a Neverland world seems like it would be awfully costly for a show like this, but they created a minimal Wonderland. Should be an interesting twist.