Yes the Canadian Tire Mastercraft pro and max series, are now imports from Taiwan, they are rumored to be built by Stanley, in the same factory as Stanley MAC.
I have no idea, if they are the same wrench, (from the same dies and forge hammers) but they are rumored to come from the same factory. Its an open rumor, here in Western Canada, I have no idea how it started, I've heard it a few times.
I don't care for MAC, and own about 6 tools from them, it makes no bearing on my decision, I only buy the Mastercraft Pro and Max series if they go on sale, and use and abuse them. If they go missing, get left behind in a ditch so what, they are cheap. Never had to warranty one, as they appear to at least be decent quality.