Simulator programs have to be approved. There may be some exception - I'm not an expert - but a full type rating won't be one of them. If he were taking the ride in the actual airplane you'd have a point. If he didn't do a type rating program in the sim, he can't get the type rating in the sim, even if he did the same "stuff"
AFAIK. I expect some things were left out of the oral and the ride (and the ground school), but I'm not sure what.
Indeed, I hadn't any idea you could do a non-type rating ATP ride in a device that "requires" a type, but according to at least one sim company you can.
They got the program approved.
I'd call the FSDO overseeing the sim. company before I'd call OKC; you can connect with the actual person who oversees the programs. They'll explain this. And please post the answer here.