a lot of people were going to bash Microsoft's pressor to begin with no matter what they showed, but the majority and the original core of those people stem from a very loud, and very vocal Sony fanboy/employee paid presence on the internet and in the industry.
I know and have proof for a fact Sony pays to spread propaganda on the internet as a form of advertising. They have plants on all the sites, corporate shills posing as regular users.
That said, the other nay sayers were of course Game Stop people and even Gamefly, afraid of the DRM licensing and blocking of used games, and shutting down their business, and lastly, just plain good old fashioned jealous fanboys and trolls.
This game is looking to shape up to be a 10/10 and a BIG WIN for Microsoft, I'd buy the system for this game alone, thankfully Microsoft has plenty others I'm interested in too !
Can't wait for Xbox One !