The America's Cup has reached a tipping point as Team New Zealand's technical superiority in shifty offshore winds has left INEOS Britannia reeling. While the British showcased aggressive pre-start maneuvers, their inability to match the Kiwis' acceleration out of tacks has turned a tight race into a lopsided affair. Now at match point, the British team must decide if they will stick to their failing data or risk everything on a radical technical shift.