There have been quite a few large multi hulls, including many larger than this vessel, but she is so light, so much sail area and so high tech that I am sure she will be faster---if she hold together. Remember that as they first sailed they basically "powered up" the boat, starting with a double reefed main only. There will be strain guages in all of the rigging, and many places in the hull to see what the loads are.
Even larger is 131 foot Banque Populaire V, at 40 meters (over 130 feet) was launched this last week also. She is also powering up--with similar issues a Or
Other large multi hulls include Orange II, which is over 125 feet long, Cheyene about 125 feet, Play Station 120 feet, Gitana 13, over 100 feet, Geronimo 110 feet, our own Tom Cat owning Georgs Kolesnikovs sailed a 60 foot Tri from New York to San Franscisco setting a record for the passage. Dennis Conner's Starts and Strips at 60 feet raced in the Americas cup (sure these are small vessels, but many of the same techniques prevail).
I agree, the America's cup has really lost interest for me. We had our boat in Newport, RI for the 1983 cup and knew a number of the crew members, so it was a very exciting time for us... But with the huge budgets, well over 200 million dollars, this type of sailing is out of touch with reality and the majority of sailors.