AA or KP would get beat on the FOD, that gear does not have enough power to let their talent shine. Of the top FW competitors the lightest and the youngest of today would have the best chance at even placing in the 2012 FOD Event. That wicked fast Brazil kid for example. Although AA could win FW in 2012.
FW and FOD are not close to the same thing when it comes to winning. The resons are obvious, there are 1000 different FW fins that tune different for 1000 different FW sailors that tune different across dozens of different FW boards that tune different to 1000's of different FW rigs trimed a 1000 different ways.
Or you could run an FOD regatta and claim that winner was something special. In truth that winner accomplished a slight portion of what an FW champion had to do.