Yup, it seems as fakes have come out for the m3ds real... On their official website, they talk about it and compare screens.
Fake M3 DS Reals
When I looked at one of the screens of the fake, it looked like it had those markings like the DSTT under the ROM name.
Fake M3 DS Reals
When I looked at one of the screens of the fake, it looked like it had those markings like the DSTT under the ROM name.