I can't tell. Also, are they using a hard drive that spins at 5600 RPM or 7200 RPM? Maybe that makes a difference? I don't notice how the framerate became worse. If anything, it actually feels a little smoother in some parts.
Try starting a new game and look in the tutorial section again.
I had a saved game since day one of release and I didn't see anything in the tutorial section. Once I started a new game, I double-checked the tutorial section again and it appeared right at the top.