That's my point...manual gear selection, whether it be with an actual manual transmission or auto is definitely advantageous for certain situations. Toyota recognizes that...some of the other OEM's don't.
Other than frame and engine, I think the Tacoma shares quite a bit of its underpinnings with the Hilux. They're definitely not the same truck, but then again neither is the NA Ranger and the global one. In both cases, there is some shared DNA between what we get in NA and what the rest of the world gets.
The Tacoma actually uses the same rear axle as the Hilux (8.8"). I have no idea where that axle is actually manufactured, but the dimensions and specifications are damn near identical, if not exactly identical, to what the Hilux uses. Other than rear axle and different frame and engine/transmission, I don't know how NA Ranger differs from the global one. I do know that for as much as the global Ranger is praised for its offroad prowess, the NA version seems quite tame and underwhelming by comparison. If people rant and rave about the global Ranger, that's the type of truck Ford should've built for us.
BTW, the main reason Toyota and Ford can't/won't import its global truck offerings is because of the Chicken Tax that affects imported trucks. It's leftover regulation from a bygone era, and the US consumer would be much better off if it were repealed.