If you look at a standard coffee "cup" as in what might come in a dinner set, they're only 4 to 5 oz. Or only about 120 to 140 ml. My Zojirushi calls 5 oz a cup. So does Bunn (which is an American company). Having been in Europe many times I noted their dinner sets do have smaller coffee cups. But then again typical European typically likes their coffee to have some "legs" not the typical brown hot water most Americans like.
FWIW I ran out of coffee in the pot yesterday because I miscounted

Told my wife I typically make 3 mugs. Which is correct but ONLY when she's out of town visiting her sister or something. I typically make 4 for us. On the Technivorm it came to a "hair" over 8 on the reservoir measurements. On my Zojirushi that would show up as a touch over 7 on the reservoir. Basically "semantics". All I know is the thing makes one DAMN fine cup of coffee and does it fast!
It's actually so different that if I gave you a cup brewed in the Zojirushi and one in the Moccamaster you would swear they were not the same coffee. Very different "nuances".
What I should do is resurrect my old OXO Barista Brain, unit and compare it to the Moccamaster. As if you look into what OXO was aiming for it was the Moccamaster. I think they would be more similar as both are conical filter while the Zoji is a basket type. Also since when OXO brought it out the target they were aiming at was the Moccamaster.
I think that will be on my list of "to do" just to satisfy my curiosity