While both use the same LT1 engine, the Corvette typically has:
* Lower weight: This is the biggest factor. The lighter weight of the Corvette translates directly to quicker acceleration and higher top speed.
* Slightly better aerodynamics: The Corvette's sleeker body reduces drag, giving it a small edge.
* Potentially different gearing: While not always the case, the Corvette's gearing might be optimized for slightly higher top speed, although the difference would be minor.
The difference in performance won't be dramatic, likely only a few tenths of a second in a quarter-mile race, but the Corvette would generally eek out a win in a head-to-head matchup.