Heck Bonkers.....don't let anyone fool ya....helicopters are all the same....but different. Just like the female of the species....each have different peculiarities and need different kinds of handling.....ignore or abuse any of them and they will get even! If you can fly one...you can fly anyone of the others....it is just a matter of how well and how long it takes you to figure out the taps, levers, and dials.
But helicopter companies.....oh, now that is another story!