I just had a look on the 2016 releases on PS4 and PC with a MetaScore of 80 or better.
Very few of these games in the PS4 list can't be played on PC.
The big ones are of course Uncharted 4, Ratchet & Clank, The Last Guardian, Gravity Rush Remastered and Final Fantasy XV, followed by Rez Infinite, Odin Sphere Leifthasir, MLB: The Show 16, Madden NFL 17, Dragon Quest Builders, BlazBlue: Central Fiction and Skylanders Imaginators (not everyone of the latter games are AAA).
I wouldn't rule out PC ports of Final Fantasy XV and BlazBlue: Central Fiction in 2017, since most games of these series are already on PC:

So PC gamers without PS4 miss out on the games in the upper paragraph.
Instead of these they can play the AAA games Civilization VI, WoW Legion, Forza Horizon 3, Total War: Warhammer, Gears of War 4, Killer Instinct: Season 3, the undervalued Quantum Break and a few dozens good indie/niche titles:

I'd say the library of good 2016 releases for PC + PS4 is pretty much on par and nobody can complain.
The lucky ones that have both a PS4 (Pro) and a gaming PC should be very happy with this year and will also be very happy next year.