The idea of a "power up" is from the manga genre more so then Bleach it's self. Many manga's of this genre have charactors that start off no more able to kill a simple foe. Then by reasoning of manga that charactor gets to the point of complety destroying anything, till another "stronger" foe appears and the charactor can't defeat. This again repeats the same pattern over and over to continue the story.Originally Posted by ViperTM
The way that Ichigo gets more power is more or less called in to question more by the fact of how well the manga protrays him getting better. It's not a slow progression, but it's sudden, more often resulting in the "1up" (super mario) jokes.
The chapter however being on topic, had me thinking Yammy exploded into action saying something like:
"IS YAMMY GOING TO HAVE TO CHOKE A BITCH?!"
At that point I was laughing hard enough to close the chapter.