remember with higher gear ratios...u spread out the range of possible drivin speeds per gear....so when someone with a lower gear ratio shifts from first to second at lets say 60kmph...another person with higher gear ratio could do this at 80-85kmph....and all in all have a higher final drive ratio....
plenty torque may not necessarily have to do with higher gear ratios...in EVO IV for instance...there was a choice of a high or low final drive gears in the RS model to help in tuning for competition use...this didnt change/have anything to do with the max torque output of36.0Kg-m@3000rpm ...it just meant u had some bloody fast power shifts in between gears with the super-close-ratio gearbox...
dont kno for sure tho...just my thoughts on it...