I think 996TT and Gallardo perform better under bad weather. I experienced to travel at 160kph under very heavy rain with 996TT, the whole car was slipped away a bit to the other lane but it was still going in staright line; however, I drove the 360 in a similar condition and the rear suddenly slide away; fortunately, I didn't had an accident, but it was pretty scare.
I think the PSM of Porsche is very good, it saved me many times.