Zant, I'm going to teach you something about non-Twili social behaviours. A. Just because someone is having a pity PARTY, does not mean they want a social gathering. B. When the Ghiriham's in the zone, leave him alone!
Well, maybe not the exact word, but... Ghirahim was threatening throughout the game, but also had a funny line from the beginning. So when he said that line and others, it wasn't so weird. Zant is all cool and mysterious and the camera zooms in on him with that scream whenever he appears... and then later on, you just wonder why you were somewhat intimidated by that guy earlier.
I just imagined myself walking up to Ghirahim and going "Cause he speaks the TRUTH!! You should have gotten more credit! As for you Zant, no because your so weird you deserve LESS screen time." I probably thought this because it's early in the morning, and I'm still looking at pictures XD