That suggests the British team prefer the light to medium stuff. The question then becomes: can they be as effective in other conditions?
The second thing to note about Wednesday's victory over Sweden was it came with Jono Macbeth on board.
At 44, the Kiwi sailor is getting a bit long in the tooth. His primary role these days is as Land Rover BAR's sailing team manager. But he is also a three-time America's Cup winner with a wealth of experience.
Ainslie had flagged up issues of communication in the defeat by France, saying the team needed to find better balance to be effective. It appears Macbeth's mere presence on the boat made a difference; helping to establish the right atmosphere.
"The bloke's done like 20 America's Cup matches," Carr noted. "You cannot buy that experience. I think Jono would be the first to say that, physically, guys like Bleddyn [Mon] and Neil [Hunter], the young guys who also sail in his spot, are fitter than him.
"He's still a strong old beast. That's why we call him The Bear. But his temperament today blew me away. In four years of sailing with BAR that is actually the first race I have done with Jono. But he brought an attitude on to the boat that resonated across the crew."
Ainslie was similarly impressed. "That was why I wanted him on the boat because we've been having a tough time," he said.
"If the guys on the other boats look across and see him, it probably puts the shivers down them a bit. It helped to settle the boat. That's what you need, to bring on big name players and put on a performance."
Racing today
5.08am: SoftBank Team Japan v Groupama Team France.
5.37am: Land Rover BAR v Emirates Team New Zealand.
6.06am: Oracle Team USA v SoftBank Team Japan.
6.35am: Groupama Team France v Land Rover BAR.