I've run a lot of Tom's stuff in the past. Still have an XM w/ his Evols on the front and Emotion on the back. Greatly improved the XM, but the G4 seems plusher stock. Don't think it's the shocks though, it's the evolution of the suspension design.
Does Tom really revalve the basic version of the Fox coil over? Seems like that would be standardized at the factory, and I seem to recall reading somewhere that Tom helps them with that calibration.
Few things...
1) "Plush" isn't really a great indication of how well your suspension is working. Put another way, go ride in an Cadillac, then go ride in a track tuned GT3. Which is plusher? Which is designed for performance?
I get that we aren't building snow cross race sleds and a bit of forgiveness is a desired thing in a mountain sled, but to buy suspension for how plush it is alone is to really miss the point (not saying this is what you are implying, but it is worth mentioning)
2) Where I found the Ski-Doo stuff to lack was two areas. First, when I'd really get after it the suspension up front and out back was under-sprung, under-damped, and left me looking for more control. If I was lighter or less aggressive maybe I'd be fine with it...Second, it quickly degrades. Not a lot of oil volume, not a high quality oil means you lose performance pretty fast. I've had a lot of buddies need a rebuild with only 400 miles.
Personally I want some support. I want the sled to be a bit harsh at slower speeds and maybe take a bit more effort to ride. In the end this translates to a more predictable and better riding sled when it gets crazy. When I REALLY need my suspension and sled to be there for me. No free lunch in setup really. (though air shocks allow you to completely change your setup if you are so inclined)
Tom does revalve for intended use, style, geared up rider weight. Every now and then these things align where an off the shelf Fox damper is perfectly suited to the rider.