Funny it devolved into Nintendo vs Sony as per usual.
2017 was an amazing year for far more reasons than Nintendo.
Prey, RE7, Evil Within 2, Persona 5, Ys 8, NieR: Automata, Cuphead, Horizon, Sonic Mania, Hollow Knight, Divinity: Original Sin 2, Nioh and Yakuza 0 were all damn amazing. It just so happens Nintendo was also on top of their game in front of an already excellent year.
Arguing that it comes down to a couple of GOTY contenders is just disingenuous. You're arguing all quality titles in an entire year, not the top 3.