There are many brands of thread that are made just for that brand. Superior, Aurifil, YLI, Mettler, Guttermann, Robin Anston, Coats and Clark. Superior doesn't stick their label on Aurifil thread.
I have Star thread and it is different from CT thread so that is why I was wondering how you thought it was the same thread. I look at all thread brands I have under a microscope so I can tell the difference. I was surprised the slubs and thin spots in some of name brand thread.