Dodge swapped the supercharged Hellcat V8 for a twin-turbo six with standard all-wheel drive in the new Charger Sixpack, and Throttle House put it on the dragstrip against the actual Hellcat Redeye it is replacing, plus a Mustang Dark Horse for good measure. All-wheel-drive traction against 700-plus horsepower brute force against featherweight naturally aspirated tradition. Who actually wins when the tree drops?