Because I definitely said that 120MB/s was average with what we were getting. Please read what I actually state instead of throwing words in there. Not sure what theoregical is either. Maybe your caps made it difficult to type? I don't care which one sounds faster, in MY experience with USB 3.0 I have yet to see it perform at a level that I expected it to. Maybe reread and comment on what I actually said.
What exactly were you expecting from USB 3? It provides enough bandwidth for 7200 rpm drives, but it cannot make them faster than a single 7200 rpm can be. The interface is not the limitation; it's the drives themselves. It's like saying I am disappointed with my new Ferrari because it goes at the same speed as a mini on a 30 MPH road with average speed cameras. This isn't rocket science.