bel29 said..same sail size, same lines (as far as I can tell)
Three year old shot, and notice that the boom is right at the top of the cutout. I have no dog in the fight, and no claim to authority of my own. I admire guys with the bottle to go out in strong wind with short lines (I don't) and I admire guys who go out in 25kt on IQ 9.0 rigs (they all seem to us the same very adjustable lines, and to adjust them often.
I do know how Andy teaches this stuff, because I pay him a pretty penny to teach me every winter when he makes his Florida swing. He legit likes the lines right near the end of the bend in the boom, and except when it's just overpowering, he runs his booms high.
On the day he was working with Aerongnr I was on the water about six miles away, and hung on to a 4.2 for three hours, just barely. I'm not at all surprised Andy rigged down.