Apparently there are only about seven makers for engines that go in these portable generators, so several brands will have the same look and specs depending on who makes them and sticks the brand labels on.
I understand that Ford makes the PowerMax gens for them, and looking at a collection of gens on Amazon, you can see several identical models of assorted brands including a Westinghouse.
It is like some years ago, when buying stick-house stoves or washing machines. Lots of different brands all made in the same factory! :)