It has a RWD, so it can go faster. It has a great hellcat engine that can handle the weight the gigantic car has. It has plenty of torque to go around and looks amazing. It's classified as a Super Car and has received the rating of being the "Fastest production sedan".
With a little over 700hp the hellcat is a quick car but it just spins to much. If the hellcat where racing the z06 with slicks on it would be a different story but if both cars are bone stalk, the zo6 would walk the hellcat. If both cars had slicks i think it would be a close race.
However, the Hellcat is simply too heavy to negotiate a winding back road or a twisty circuit. Considering that the Z06 is practically designed for racing, it will stomp the Hellcat in such a scenario. Simply put, even though the Hellcat has 707 HP, if it can't use that power, it is useless.