I know the muffed PC port badly impacted Batman, I was lucky and it only really seemed to be a problem in the car sections which sucked anyway, but these awards weren't just for PC games. It doesn't seem very fair to assess the quality of a game on the one platform where it didn't work very well.
As for best game of the year in 2016, the nominations were:
Fallout 4
Metal Gear Solid V: The Phantom Pain
Everybody’s Gone to the Rapture
Life is Strange
Rocket League
The Witcher 3: Wild Hunt
Which of those would you have picked over Fallout 4 and why?