Are you riding a stock sled? The sled is "tuned" to transfer weight quickly, both from a clutching/motor standpoint, and a suspension standpoint. This transfer is why you feel the sled is "light" (under power, it is). This is also why a lot of the G4s have been tough to tune with respect to getting power to the ground. Many wheelie like crazy, and the torsion bars aren't exactly easy to tune. (it can over transfer- hence Ski-Doo's reliance on a the limiter)
The easiest way to "prove" what I'm talking about is to take some scales and put them under the skis. Now go do the same thing with an Axys. Do it with and without the rider on the sled.
You'll see the Axys carries the rider weight right in the middle, at the center of transfer, with a very equal amount of weight on the front and back of the sled. Whereas the Ski Doo carries the weight on its skis, fully relying on transfer to get a proper skid-to-ski weight distribution.
I have no brand affiliation, I think all brands make a great sled these days. However, this weight distribtuion is THE reason I went back to Polaris this year. As you noted, its maybe not a big deal when you have a fair amount of low end grunt and lighter clutching. But when your low end isn't there and you are spinning heavier clutching (a turbo sled), you end up wrestling the sled a lot more at lower speed (tree riding, when you screw up etc). So yeah, its going to "bite" more as you are saying (more weight on the skis), but this also means you are applying more muscle to the sled.
You can mitigate a lot of these attributes through a proper suspension setup, letting out the limiter (which creates its own problems) but you can't move the mass of the motor, and this side of new spindles, you can't move the ski position.
Look how many guys love a wider ski on the G4, that too is a good indication the sled is carrying more weight up front.
Anyway, there ya go!
