It's a CVT, torque doesn't factor in the same way it would with a traditional drivetrain. Now, before everyone jumps down my throat, I'm not saying torque doesn't matter at all - in fact we all know HP is a made-up figure derived from TQ anyway. HP = (TQ*RPM)/5252 However, with a properly setup CVT anytime you're "on it" you're at or around peak HP-RPM, under load it will never really be at the peak TQ RPM. Now, the bigger motor (and more efficient head, more efficient turbo/exhaust layout, etc.) will help it spool faster and get you to full boost at peak HP RPM more quickly when you call for power and yes when run through a traditional dyno sweep on an engine dyno I'd expect to see more TQ from the Speed motor than the current Polaris and Can AM turbo offerings, but again you won't really be "using the TQ" when you call for power.
As for weight, I still don't think it'll be much heavier than a current X3 4-seater, and those seem to do fine on 200 HP.
-TJ