Simon,
It is not a question of agreeing or not. It is a question of being able to understand how this is possible.
THAT.
We can agree to disagree about what kind of pizza is best. But not science.
Early one someone said that 'The commentator is playing with numbers a bit'... while I get his point I had to chuckle abit. The commentator in questions is Iain Percy, a 2-time Olympic gold medalist, the tactician on Team Artemis, and one of the world's best foiling sailors. Pretty sure he knows that he's talking about. These teams use closed-loop modeling to test the effects of 1mm changes in foil shape, and test the results on the water with sensors informing the feedback loop. The models are super good now, and I'm pretty sure the model says this happens! ;^)
It's kind of mind blowing. But to paraphrase Jack Sparrow, you have to re-examine how you're looking at the problem, and maybe come at it from the side of 'If we assume its true, what must be true for it to happen'?