Yeah it's the same with the X2 or any kite I guess for that matter.
With wakeboarding I find it better to have the kite sit back a bit in order to give that good solid pull for that all important edge pressure. Also in things like wave riding it's not all that desireable to have the kite too far forward.
With the X2 due to it's speed it does pull harder when sheeted out a bit but that's only due to it's increased speed. If the kite is parked when planing it will still give more power when sheeted in... I'm not talking about oversheeting here... you oversheet to make the kite sit back further
But when jumping with the X2 you want the kite sheeted out a bit so it's in that "sweet spot" where it's has the most lift. Fling it back and enjoy the view