GRM had a page long story about the new SI. They said it had even shorter gearing, which meant less speed per gear, but the gear ratios (other than 1st) on the new SI are longer than the 06-11. What GRM might be thinking is that since the redline is 7000 rpms instead of 8300 like the 06-11 that even with the slightly longer gear, it might run out of gear sooner. So the power is about the same (197 vs 201....though some people think the k20z3 probably has 200 just like the RSX-S k20z1 but didn't want the Acura buyers to feel jipped that they didn't get a torsen AND have the same power as the $4k cheaper car

). But the torque on the 2.4L is 31 higher than the 2.0L 06-11.
The new one (in Sedan trim) is 29 lbs lighter which is nice.
My main qualm with the new car, and maybe I should just get over it, is that the 06-11 has 13.5:1 steering ratio and this tiny steering wheel and 7+ degrees of caster. So the steering feel is amazing. When I first got the car on an autox course, I was turning the wheel way too much because I was used to the big rig truck steering wheel and 15:1 steering ratio in the WRX. The new SI has 16.08:1 which is a lot slower.
And as I said, the gearing may be a tiny bit longer, but the rev limiter is 1000 lower so you actually get a bit less out of every gear. I'm not sure if you guys heard Matt and I coming through the finish, but I think I hit the limiter 12 times from the exit of the slalom to the finish line

.
Regardless, I don't see it being much better a G stock car than the outgoing generation unless it can fit 275/40/17s on it due to revised suspension geometry, but I don't think that is the case.