Actually Khan you're falling for the common misconception that two handed swords are inherently huge cumbersome weapons that you have to swing in a huge arc, when in actuality they were used for fairly quick movements for chopping apart pikes. Judgement is simply swinging the weapon to hurt his opponent and then drawing the blade back the other way without turning it around, which is a common technique for longswords because they are dangerous on both edges.

A quick google search would have quickly provided you with this 'One normally strikes with the true edge, but using the false edge greatly enhances one’s versatility and reaction speed. A follow-up strike can be made faster because no time was needed to turn the sword around.'

Judgement has no need to calculate some intense striking point, if you look he's aiming for almost the exact point he aimed for in the first place, as the end result was his target in almost the exact same spot, just milliseconds from hitting the ground. All jumping in the air really served was to avoid an initial strike with far more effort than it would take to just move the sword back into his opponent's path, this time without such mobility. 

Imagine paddling a boat, Judgement's hands are basically following that motion.