The X2 was just a demonstrator, it didn't look like anything you could sell (commercially or to a military). The Eurocopter X3
is also a demonstrator, but based on an existing frame. It isn't intended to be sold like that.
Also, the X2 and X3
are both compound helos but they don't work the same way, the X2 uses the twin rotors to dispense with a tail lateral rotor, and to provide lift during forward flight. The X3
has the left propeller turning faster to replace the tail rotor, and stub wings to provide most of the lift during cruise. What would be preferred for a military application, I don't know.
New Technology is the name we give to stuff that doesn't work yet. Douglas Adams