Limited AI combat dialog in WZ and WZF?

Anyone know why the AI does not have as many lines in WZ? As an example, watch this video. Even within the first minute, you will come across many lines of combat dialog (all of them very amusing) that are not present when playing WZ.

I thought it might be because the IWHBYD skull is not enabled in WZ. If that were true, it would be a shame because rare dialog definitely belongs in MP!