It's also not just another drag race. Notice they did the race from a moving 30mph, while the Aston Martin was in second gear. The Tesla only accelerates after the Aston Martin starts spooling up. This is not a from-0-mph which would throw the advantage into the lap of the Tesla.

Maybe putting the Aston into 1st would be more fair, but that's not a realistic real-world test. You don't mill around town in 1st gear. It's a surprising result because having full-torque at all times still helps when you are milling around at local-town speeds. It's not just an electric-car pony trick.