I have a 4 eprom Jaguar cart. It has a selector switch and 8 games on it. I'm not sure if it is the same brand of cart as the one in that add but the soldering jobs are a hell of a lot better.
No not the same at all. The multicart is assembled by someone who actually knows what they are doing (retrokidz) and isn't using an acetylene torch and a mallet for soldering.