I wouldn't say harder, just different!! The Rev 1 is cut a bit differently than the "B" series 1.5 and is subject to "flipping" a wing over in reverse! And it is a slower sail overall, but all the same control inputs are used in flying it, just a bit more delicately!! I have both styles, I set up the Rev1 when I just want a relaxing fly, easy on the crazy tricks and turns! Just a more soothing fly!!