Rear axle ratios and impact on towing

If one had two different rear end/tranny gear combos that would both yield the same RPM at the same highway speed, am I correct in understanding that both combos will transmit the same HP and torque, and therefore produce the same towing experience?

I forgot about the Jeep having the 8 speeds.. :)

As I've been schooled many times on that exact question about gear ratios, that was my thought too... Same rpms, same power output... Well, taking the 'schooling' I got, the vehicle with the lower rear gear ratio will actually have more of the engines torque being applied to the ground than the one with the higher gear ratio even running at the same rpms.

So, you could run lower rpms, but have the same or more torque going to the ground with the lower rear gear ratio and running a gear or two higher on the gear selector.

I'm sure there is a lot of math involved and I don't have a clue on that, but if you think about it when riding your old 10 speed bicycle as a kid you could change the rear wheel gears and/or the pedal gears and get a variety of different ratios that provided the 'easiest' peddling effort on your part.. I remember liking the rear wheel gear to be one of the larger dia gears and running the pedal gear on the smaller dia gear...

Anyway, there is also a difference in a diesel and a gas engine in terms of torque output at a given rpm, so that could also factor into the equation as well...

Mitch