If you really have to chose between the two...
Well for one, the Jeep Compass wasn't offered in FWD in that year. Only 4WD.
The Jeep Compass gets 20/24 on gas mileage vs. the Pontiac Torrent getting 17/24.
The Pontiac has a 3.4L V6 vs. the Jeep's 2.4L I-4.
Pontiac-FWD vs. Jeep-4WD
Economy? Go for the Compass.
Power? Go for the Torrent.
They are both in the mid-teens in pricing, so money is not much of a factor.
My advice is: the Compass as Jeep is still in business and able to supply you with help in the case that there are defects. Plus it gets better gas mileage.
Hope that helps.