Be glad Uncharted 4 isn't coming out this year either or it would've been an even bigger stretch to say Batman will be the GOTY. Plus, that whole Witcher 3 game everyone's hyped up hasn't come out so who knows. I highly doubt a Batman game will reach that level.
Even if Uncharted came out this year, it wouldn't beat this. And everyone is hyped for Witcher? Good for them.