yes I would agree on the final drive ratio but the low end is where the difference is. the T is in the same ball park @ 60 mph.
It's funny that some think the Toy is trying to be a 2500, If that were the case it would have been labeled as such.

I too have a 2500, a 2000 Dodge with a cummins, it gets the heavy work and handles it quite well but again, for a half ton the toy truck shines..