Dude just calm down guys. The game isn't out yet, and if you're going to not play because they grass doesn't look as good as you want, that is fine. It is still a modern game and it has high-quality textures and details built in. I'm sure the appearance of grass will fit the rest of the scenery and there will be detail options in the graphics settings that you can set to better looking or more horrid-looking grass depending on your device.

EDIT: The arguments that "this game doesn't look like that game" shouldn't be valid, because each game as their own pros and cons when it comes to graphics.