Well, not as much as you would think. Explain then T Rice and other SuperNatural style riders who kill it on true twins.
He's one of the best in the business and performing freestyle moves in that event?
I think it still stands true for the average rider a directional shape and flex board will be better in the powder while going forward. Actually this is true for Rice and the rest of the gang, but he's got the ability to overcome the limitations of the board.
People have been telling me for years I should be on a rocker board in the powder. My mad skillz allow me to rock the camber however I want on whatever I want!