Was looking at Aspen as a tow vehicle. I noticed the 5.7 hemi with 3.92 rear axle ratio can pull 8700 but the 3.55 can only pull 7200. Does the gear ratio really make that big of a difference.
Yep, it does. but also agree that you'll run out of payload before you get anywhere near those towing amounts.
SUV's are famous for having much lower payload capacities, compared to the trucks built on the same chassis. and their suspensions are way softer also.