George.....wasn't trying to be rude.....just suggesting an elaboration on what you said might be in order. As in all things.....the details are what kill us.
Firstly, there are many models of the Bell 412.....and they all have different performance based upon the different engines and other Mods.
Add in weights, OAT, take off and landing altitudes, wind, and terrain surface, which might be very different based upon where the aircraft is working, and simple statements such as your are just using too broad a brush.
Take an early model 412.....what most call a "No P" and compare that to the latest greatest 412....call it an EP+ or whatever it is.....and you have two entirely different critters.