In reply to KennyBec:
Try to find the down/feather ratio used in the fill for both jackets. These are the three data points you need to properly compare the two:
Fill weight
CUIN/fill power
Down/feather ratio.
Generally the higher the better, where the last one is expressed in ratios, such as 95/5 or 90/10. You'll want to have a higher first number, as this expresses the percentage of down used, which has more insulating ability than feathers.
As it stands now I'd say the difference is negligible and I would make my choice based on other differences - maybe the old one has better features. Rab did just gut the Torque Jacket so I wouldn't be surprised