I have no facts to back up my feeling, but I think I'd call BS on that one. No manufacturer is going to make two different quality machines and label them the same. The nightmare of keeping things straight in the factory would be enough to deter it.
I don't know how it works with sewing machines, but if you buy a Ford car all Ford dealerships must honor the warranty. If your dealer is 4 hours away, they are not going to be much help to your anyway should you need it.