I can agree with you a bit on the jerkyness, but they could still be adding those half animations etc. to clean that up. And a lot of what you saw in the trailer was for effect -- I assume because they want to show off action. The game showed better in the guided demo I witnessed since it was the designer playing, and he was doing more blocking and had a methodical pace and all that.
But yes I'm sure a few things will still be less than realistic because it is a game and they have to take some liberties for the masses -- hitting is more fun than blocking for most you would think.
Since it's still a little less than a year off I think they just want to make sure there's stuff to reveal in the coming months. I look at TNA Impact which comes out in September and they still aren't talking about the season mode in that, so it seems like standard practice.