Thats stupid.
I've had big quads....last three were a Griz 660, Brute Force 750, and an Outy 800....and the last two had more power than could be used/was safe. Nothing like climbing an incline and you bump the throttle a little too hard...uninentional wheelies, esp. on a technical trail are not fun. Sure, the bikes are fun at 100KM/H on the logging roads...but only until you look down and see your tires all tall and skinny. It's about then that you start to wonder A: What speed are these tires rated to? and B: I wonder what would happen with a 1-4 tire blowout at this speed?
People will buy them just to have the biggest bike, but it's really not needed.
After all the high power machines, I finally decided on one that does everything I could possibly want: A Kawi 360. The thing isn't fast, out it would out0-pull and out-mud my 750, gets awesome mileage, and is controllable in every situation.