Well, award shows are all about opinions, and yearly award shows tend to be limited by comparing them to what else came out in the year in question.
As I've said many times Bioshock Infinite is a decent game, and is probably worthy of being called one of the year's best generally due to pretty much crap coming out this year, so it doesn't have a lot to really compete with in the final equasion. As a game it has a large number of flaws, starting with of course the attempt to be a giant bash on the American right wing, oftentimes without an understanding of the positions it's trying to satirize, and of course the weakest cop out of an ending since "Mass Effect 3" where they pretty much decided to fire out a shotgun of weirdness, had no real idea on how to tie things up, so in the end they pretty much decided to go with a surreal "Infinite Paradox" type ending that is supposed to be profound due to the entire thing pretty much rendering itself irrelevant and ending on a note equivalent to a giant wet raspberry coming from your dog's posterior before it rolls over and goes to sleep.
The thing is that Bioshock: Infinite is an example of a game that still manages to be really good, despite numerous failures, especially in light of simply not being up against much else that really seemed to make the effort. It has beautifully constructed environments, an illusion of depth in it's storyline for a while (even if it takes a dump all over it), and some amusingly quirky ideas. I mean simply contriving an environment where you can see warbots in the form of George Washington and Abe Lincoln cut loose on each other with mini guns deserves points for the simple "WTF" factor if nothing else.
All told it's a decent, safe, choice for any awards show.
That said I will say that where the initial Bioshock games tried to present their powers in the context of the setting for example, the disconnect with this one was immediate which I think is where a lot of my personal issues come from. When the very first thing you run into is them pretty much giving away what amounts to free mind control powers at a faire it makes my brain hurt. Seems like we're dealing with a society that should have had more of a rape and civil disobeidience problem on that merit alone before a bunch of anarchists came along... I mean the problems with that one almost write themselves.