The numbers Tesla presented are a little deceiving(if you don't know what they were actually saying), because it is 5x the energy density and 6x the power per cell, but the cells got much larger so there are fewer per car. So it's not that a Tesla battery pack increased by those numbers, just the individual cell.
The 16% range increase is really the one you can compare directly, though even that includes the increased efficiencies in the other aspects of the car.
I'd be interested to know how the actual power density changed in W/kg.
Definitely some good progress there, but it doesn't seem like it is anything other manufacturers couldn't do as well. I think the dry cathode is probably a huge money saver for them, and will probably be adopted by others.
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