I can't even find the supplement facts/ingredients of the other product. And quite frankly, I would never order something that doesn't list and explain what is in it and, more importantly, why. Too sketchy and they don't care after they have your money.
About HOT-ROX, though, it has always worked great whenever I need to get leaner (also great when bulking to help minimize fat gain). Never had any problems with it and I highly recommend it.
Hope this helps and if you have any questions, ask!