@Kazuraki Yeah, considering the Power difference there was no reason for it to go on that long. It pretty much should have went:
"This is my Power! How do you liBLARGH" And then the Villain would leave the stage, through a wall, maybe more than one, in different directions. And Accelerator would yawn.
Timeframe for Battle, three Pages, there was zero reason for this fight to go on several chapters.