game of the year really doesn't mean what was the best game of the year. it's a representation of the game industry. at least, that's what it's become. and generally speaking, it's whatever game can mimic film the best in terms of how it engages its audience. story triumphs all, and if one game has presentation elements that supersede its technical ones, it'll be the presentation that wins out. it's how low-quality games like telltale's the walking dead wins game of the year awards from multiple locations. it's why mass effect 2 was basically the default winner in a year of super mario galaxy 2, bayonetta, vanquish, and sin & punishment 2.
not to mention that there's an increased sensitivity towards the depiction and treatment of women in games. bayonetta 2 would be a terrible poster child for the gaming industry. especially this year.