WoooHooo, awesome awesome race and a simply Brilliant 1-2 result for Vettel & Webber! =D>
I think the reason the RB5 is so good in the wet is it's Mechanical Grip levels thanks to the front suspension design (the V style "keel" provides a very low mount point for the lower suspension arms) and the incredibly low center of gravity created by Newey's Pull-Rod suspension packaging etc.
I wonder if the DDD teams loose out in the wet with the feeder holes in the floor only able to suck in water?