The "feel and see" category is a reference to the fact that the PSEye picks up and displays where the controller is in video form back on screen, probably. Games like Eyepet and the block-stacking puzzler, Tumble, utilize this to an extent.
The Wii-remote, conversely, isn't picked up by a camera, and therefore, can't be directly pictured on screen in it's real, physical location. Thus, you can't see it, by Sony's marketing logic.
Not that I'm arguing it isn't faulty logic, I'm just posing why I think they would say that.