That makes alot of sense, I never really had that explained to me before. Thank you.that's basic geometry say you have point X=====Y
now compare that to this X===============Y
move "X" up or down , a 3 inch movement on the longer X=Y will yeild less of a change in angle. Jump and the bumper of your bike, the tires slide outwards (scub). On Sundahls bike (I have jumped on the bumper) there is 17" of travel with virtually ZERO scrub.
This makes the suspension much smoother and more compliant.