Craftsman have always been other manufacturers products rebadged as Jim describes. The difference today is that Sears no longer provides service and parts as they once did. In the past, you could give them the model number of ANYTHING. And they would sell you any part for it at a reasonable price. No more. They even closed their parts and service facility in our town of 25000.
The parts problem makes their mowers even less attractive than they already were.