Quote Originally Posted by Kraco
This kind of a "power-up" was just the right amount for Kenpachi to beat someone like Nnoitra. Nnoitra was only the number five Espada, nothing more.
Nothing more? He's about 1000 times stronger than Ichigo was when Ichigo beat Kenpachi.

Which brings us to the huge plothole in all this...why they fuck didn't Kenpachi use two hands against Ichigo?

That probably bothers me more than anything else. That his powerup isn't even new. He's using a powerup he learned centuries ago. At least everyone else is using shit they learned recently. His character growth since his loss to Ichigo has been exactly zero.