No conclusion about range should be made from this video. And not this is the idea of it. The video wants to show how far the driver can reach on a long journey. But the range is measured in variable conditions. In the video they only drive with the same constant speed which is a profile of a test that eliminates all the advantages of the different motor concepts. Normally the cars accelerate, deccelerate, coast, and drive with constant speed. The first three are missing in this test and it's exactly where the Tesla shines and the rest, especially Kia, fail. Here there are three basic concepts of motors - permanent magnet synchronous (the rotor is made of permanent magnet), induction motor and only Tesla with reluctance motor at the back (at the front I think it has an induction motor, but it is seldom used).
When the car is accelerating the two most important factors(for the range) are the efficiency of the type of motor in full load mode and the weight of the car(the lower, the better).
The efficiency in this regeme goes like:
Induction motor<PMSM<<<<<<Reluctance motor. So Tesla slams here all the others.
Deccelerating is important for the regenerative braking. Here the factors improving the range are mainly power of the elmotor (the bigger the power, the more electricity it generates when braking) and to a lesser extend the weights (the bigger the weight, the more kinematic energy can be converted in electricity). So the bigger the power, the better. (Kia and Nissan suffer here)
Coasting: When an EV is moving, the rotor of the magnet is rotating (except if there is some decoupling system that nobody wants to have in an EV due to added weight, complexity and lowered durability). And here the PMSM suffers, because the rotor is made of permanent magnet and when the car is moving it always creates a rotating magnetic field or with other words the car can not coast and a lot of energy is wasted(the Tesla RM has permanet magnets in the stator, so it does not have this disadvantage). Here the ranking goes like this:
PMSM<<<<<<RM<<IM.
In all this three regimes the Kia will be the worst, and Tesla by far, far, far the best, but of course here in this video they are not considered.