It's amazing that he's been able to figure out the A cat so quickly, if indeed he's only been on one for a week!? Maybe the 49'r is a lot more like the A cat than a Laser, with the trap and apparent wind sailing, etc. OR...maybe all the other A Cat Champions are just getting too old to hang with the 23yr. old?
You can probably bet he also knows a thing or two about training, coaching, and preparation as well.
His training with the 7 time world champion clearly has nothing to do with it...
Just like Nathans foiling moth experience has no direct translation to a foiling A-cat and winning the practice race..
