Compared to what the black devouring force field had taken the first time around, losing 6 million square kilometers isn't so bad. This was because he had gotten better with the process, so he was able to reach the Cave Heaven faster than before.
By the third time, he had gotten even better at getting into Cave Heavens. He was able to get into the Cave Heaven in the shortest time. Unfortunately for him, this didn't help to reduce the amount of Cave Heaven that was lost.
He lost 9 million square kilometers this time around. This is greater than the 8 million that he lost during his second rodeo.
He lost even more despite becoming better because his Cave Heaven had gotten bigger, which in turn made the Devouring Ability stronger. With the Devouring Ability getting stronger, it could now eat stronger things faster.
