The demo code and shipping code are different, they don't look the same. To properly compare the effects of their mlaa, we need the final build with it both on and off. We can't do that so there is no way to know what effect on texture detail it has.
I saw lbp2 at e3, but again there was no non mlaa version to compare it to so I can't come to any conclusion as to what it does to textures. Devs do all sorts of post process, so there is no way for me to know if a slight blur or softness to textures is a result of mlaa, or from other post process steps, intentional artistic look, etc. The only way to know is:
1) take final build of game
2) take screen grab with mlaa
3) take identical screen grab without mlaa
4) compare
That's it, there is no other way to know.