The Adder is the highest performing car in the game, bar none. It's speed is unmatched, it stops on a dime, and handles superbly at high speeds. But more importantly, it's weight makes it an absolute tank. The entity on the other hand is the equivalent of a flimsy hotwheel. It's acceleration can't make up for it's tendency to leave the ground, mediocre top speed and laughable looks. The so called unrivaled handling of this car is a myth (Maybe when it's cruising under 100mph) that was probably perpetuated by a tortured nerd who was bullied by a kid whos imposing physique resembled the Adder.
Conclusion: The Entity XF is a car specifically designed to appease virginal nerds whos estrogen levels are only matched by their time spent playing WoW or watching Star Trek. Not surprisingly at all, The Entity looks like it'd feature in a show like that.