I've had the CED's for SW and Empire, and can confirm that they are the same time compressed transfers used for the early Laserdiscs. The plastic caddy's they come in make for nice collectibles though. :)

As CED has been dead a lot longer than LD, there are more problems involved in getting a working player and the infamous stylus cartridge. (The last player I owned literally self destructed when some gears jammed!) It's probably a good thing there are no exclusive titles unreleased elsewhere.