What year are the cars?
Aston has always had shit gearboxes, so even though the 360's is outdated, it might still be better. Also, The DB9 is said to drive more like an everyday businessman sports car, the Ferrari is meant to race. Although the Aston has a bigger engine with more power, the weight to power ratio is better in the Ferrari and so is the weight distribution. It is a V8 but pumps out about 110hpper litre, the DB9 is only about 75. 360 has better 0-60, 0-100 and quarter mile.
I'm a Ferrari fan FWIW.