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Outperforming depends on more than simply horsepower and torque numbers. What are the weights of the other two Audi's? The Audi's are also AWD, gripping the road better on take-off. You would also have to compare suspension components, as better suspensions reduce body-roll in cornering, can lower the center of gravity with new springs or coilovers, and reduce the nose lifting on acceleration or diving during a hard braking maneuver. It also depends on where these engines are making their peak power, along with how long in the RPM band it can keep that power to the wheels. Then, you can compare transmissions. The manuals are hard to compare, as most can be modified to make a shorter throw. The automatics in the Audi vs. the Solstice are probably totally different. I believe the Audi's have the tapshift ability, and our automatic transmission has not been known to be the greatest. Then there is the ultimate factor, the driver!! These are just somethings to think about, and the specific type of performance you are looking at is key also. Are we looking at straight line quarter mile times, 0-60 times, autocross times, slalom times, etc.
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