Sorry wouter, do not agree.

They only got the foils sussed before the regatta, they have only been sailing the boat on foils a short while.

I was very surprised they were as close as they were to the other boats for an untried platform etc.

Comments on SA (don't have time to find them) said (paraphrase) that they "showed bursts of speed"

I'd suggest that with time (and money) it would be quicker on foils.