James Galbraith:

The 15-inch 2.4GHz Core i5 MacBook Pro’s Speedmark 6.5 score is 55 percent higher than the 11-inch MacBook Air, and 22 percent higher than the 13-inch MacBook Air. However, the flash storage in the new MacBook Air still beat the standard hard drive in the Core i5 MacBook Pro, but in tests that could take advantage of the Core i5’s HyperThreading technology like CineBench and Handbrake the Core i5 MacBook Pro was twice as fast as the 13-inch MacBook Air and not quite three times as fast as the 11-inch MacBook Air.