Another example by Nadal against Almagro. So much extreme height, not actually all that much topspin (again, Nadal did not take a massive cut at the ball, so he couldn't have put insane topspin on the ball), yet it bounces over Almagro's head.
All Almagro can do is meekly bunt it back, and Nadal gets the easy smash.
Seriously, forget heavy topspin semi-moonballs, Nadal just needs to hit these deep, moderate topspin extreme height moonballs to backhands and he'd win rallies in two strokes. Moonball, smash. Rinse, repeat.