Towing capacity, carrying capacity, brakes / brake controller (electric, electric over hydraulic). I think torque will be there by default. I’m a multiple superduty owner and I’m tired of chemistry lab every time my Fords pop the service coolant system message. First it should be plural because there are two, and secondly you need a small lab set to get it right, and third, after 105k miles you dump both which are a total of 45 quarts. I do my own mechanic work. And along with multiple cooling systems I’ll be glad to ditch belts, hoses, differentials, u joints, drive shafts, transmission, engine, oil changes, and all the other flushes. I’d be happy for 100 mile range on an HD. I pull privately local only, not a hot shot or commercial. 34’ Brute Gooseneck, 22’ gooseneck car hauler, 18’ bumper cattle trailer, 14’ gooseneck 7 yard dump trailer and 3 bumper pull flatbeds plus the toys! Super Natique. Ahhh.