A sail like the one on the AI is a compromise. I windsurfed during 26 years and I have seen manufacturers trying to come up with sails that would perform well over a wide range of wind forces. But in de end the solution was to have a set of 3 or 4 sails, each one dedicated for a particular small range of wind. (3-4 and another for 5-6 and another for 7 and more Beaufort). The sail on the AI is in my opinion at its best in a force 2 to maximum 4.
Ideally the battens should be stiffer and more horizontally oriented but that would make reefing impossible.
Also, as the sail gets smaller when reefing, the effect of the wind on the hull, the amas and akas, the remaining part of the mast and the sailer gets more and more important. (Windsurfers use smaller boards in strong winds).
The sail on the AI is a compromise which is the case for all sails that can be reefed. but a good compromise I think because of the limited "elbowroom" one has on the AI. (Changing the sail while on the water is not an option I guess