User blog comment:Kevo411/Nen Battle Thoughts/@comment-14902757-20140607044633/@comment-24287488-20140607080146

Also, Feitan's power is determined by the amount of level he pissed off.... just like Youpi's rage... more he's pissed, more will be his power. Knowing that he has different forms of Pain Packer, I could only imagine his other form will be like Super Nova or maybe Black Hole, LOL.

But just as you've said, the fight will be over in mere few seconds... not letting Feitan to launch his technique and his technique Pain Packer takes time to launch just like Gon's jajanken which is at major disadvantage... Youpi will make the game over in that period of time or could do major damage to him.