Wow, this series is really developing a pattern for atrocious comic style. This joke, like most in the comic, is absoltely terrible for it's telegraphing.
Let's break down the panels.
1: Girl talks about wanting to use violence after seeing Kickass.
2: Sees Ebert and says she's going to change his mind.
3: As superhero, threatens violence.
4: Uses violence.
Sets up a situation, then follows through the situation. No twist, no variation, just doing exactly what you say you're going to do. This comic always leaves a bad taste in that it always tells you what it's punchline is going to be in advance. A character warns that an avalanche of games is coming, then an avalanche of games comes.
Comics as a medium demand a certain understanding of timing style, and organizing panels for an effective punchline, and this comic consistently fails miserably at that.
Edit: But oh, there's an Ultrajoe plug OMG. Really? References? That's supposed to carry the comic? People looking at it and going "Oo! I recognize that thing you just mentioned!"