The reality of the situation was that Loki wasn't actually injured at all by that attack. He had only pretended to be injured so as not to appear too strong and scare the enemy away.
All of the groves on his body were created by himself using the Nanite Metacs. The groves were not created by the storm of swords, so he hadn't actually spent any of his lifespan to heal his injuries. He had only wiggled the surface of his body around to produce the facade of healing.
It seemed his facade had successfully fooled the swordsman, as the storm of swords was created with the same amount of power. With this kind of power, there was a 25.9% disparity between his power and Loki's.
Loki knew about the disparity in power, so he knew what to expect next. But the swordsman didn't know about the disparity of power and expected the same thing to happen again.
