Ask an Aran thread.

If anything, that contributes to my point. Overswing + Final Blow is less than 200% damage worse on paper and is better if you're hitting near max damage. Not to mention that way you're not spamming one skill in one place that only works on virtually immobile enemies. The whole rolling spin thing was just to make a point about how situationally useful any skill is and that it's stupid to say that final toss is the only thing you need.

Besides, Overswing and Final Blow are both being buffed more in Union more than Final Toss is, making it not even a contest. The only utility you could possibly expect from Final Toss is the bonus damage from knockup which doesn't work on Boss monsters, including everything in LHC.