Same thing happens with Madden. Some people already have their mind made up. Even if they watch the video they'll just hone in on the negatives they see.
I'm more of a 2K guy but really the same thing can be said about 2K. If you are someone that isn't or hasn't been a fan of 2K's gameplay chances are they won't add or change anything that will change the minds of these people. At least we are fortunate enough to have options on basketball videogames and it looks like we will get two quality games this year.