I looked at that advertisment and nowhere does it say anything about Power Belt. The plant that makes the power belt bullets may make this saboted bullet, but I wouldn't call it a Power Belt.

Now CVA may own the power belt company or rights or whatever, but that saboted bullet doesn't look like they are trying to sell it as a Power Belt. S&W owns T/C but I don't see anyone calling the Encore a S&W Encore do you?