They redid the run and the truck shifted correctly (see video below). He shifted the truck on the column in the first video and that messed up the shift points (or the truck doing the shifting). Imagine that is why they redid it.
Still slower than the Chevy based on their other test too...I'm with them and would have thought it would be faster based on the HP and TQ numbers but, it is what it is and they tested them in close conditions.
I have not towed on roads like that so I don't know the answer for being slower? Heck, I've never towed in the mountains other than pulling a pup with a Ford Escape through the Smokey Mountains so maybe that is what she would do with that much weight and up such an incline?
I knew when he changed the gears on the column shifter it messed up the shift points though. That's why I looked for for another video...I've done that myself and thought why isn't this thing shifting right?! You have to go all the way through the gears (beyond 6th) and he didn't the first time. The second video he never touched the manual shift button on the column and the truck did a better job of holding the gear and upshifting (thought it was a little late on the down shift though).
If I lived in the mountains I would buy a diesel anyway for the shear torque of getting up such hills. I live in Texas so not many hills and certainly nothing like that climb!
The truck does a great job of staying in the right gear with my experience towing. It will shift down when needed but my travels so far, it has shifted very little.
Here is the second run... (don't know how to embed)