I don't know jack about Game Grumps but I know the basic concept of these animations. Take some existing audio and build an animation around it. Your animation is actually pretty good as well as being expressive and fitting really well with the voices, but for something this short you shouldn't have left this as minimalistic as it was. You could have easily afforded to amp the smoothness of the movements and completely color in and texture the environment and characters. Also this just has very little replay value or entertainment as a whole.