While the differences noted here sound reasonable, I'm still a bit irritated that the manufacurer page shows all models with the revision "2" in the name, except the NINJA ones, i.e.
http://www.diatec.co.jp/en/ lists:
Majestouch 2 Camouflage
Majestouch 2 Camouflage Tenkeyless
Majestouch NINJA
Majestouch NINJA Tenkeyless
Majestouch 2 Tenkeyless
Majestouch 2
Webshops however list the NINJA ones with the "2" in the name, e.g.
http://keyboardco.com/ USA Filco Ninja Majestouch-2, Tenkeyless, NKR, Soft Linear Action, Keyboard
My reasoning/speculation:
Maybe the NINJA version first appeared when the Majestouch line was on rev "2" already, so it's the first revision of the NINJA, but based on Majestouch rev 2?
And webshops don't want to make it look old/different, so they just add the "2"?
Does anyone have a proper explanation for this discrepancy?