Is a ultra shift 13 speed really any different than a Ultra 10 speed

The 10 speed uses air to shift the gear, shifts much more slowly and won't skip shift. 13 speed shifts faster, has an electric motor to shift gear, will skip gears 2 at a time if it makes sense to it to do so and the clutch is electrically operated. Very different to use, 13 speed has more wear parts to replace but really they are both manuals with electronics doing the shifting, 13 is much nicer in practice.

 

They both use the same controller and work the same if they are both the automated Eaton Fuller Ultra Shift transmissions. You will notice a difference in the pulling power on the top end because it can pick a better gear for that speed. As far as fuel mileage I cannot comment as I haven't really measured any between the two.