Well, my actual point is that the Gamebryo/Creation Engine sucks and grass is definitely a performance hog/killer.
I played Oblivion forever, and even though the engine was amazing at Oblivion's launch, and I was blown away by it, eventually it pissed me off too much while tweaking it to be able to keep playing the game. I didn't stick with Skyrim for as long for the same reason. I was so disappointed that they pretty much stayed with the same engine, with all its flaws still blatantly apparent.