My $.02... The torsional (twisting) flex feels similar between 2012 and 2014 despite the highback design difference. They both are hella stiff perpendicular to the board centerline - as in supporting a hard heel-side carve.
Disclaimer: my twisting and bending was not performed under rigorous scientifically controlled repeatable conditions, nor was my analysis peer-reviewed. My estimated margin or error is.... wait for it... 3%