Please explain how someone talking about someone else's mother IC (IC you do have a mother, after all), is worse RP than yours in that log?

Or asked another way: Do you honestly believe that you were roleplaying your character for the duration of that log?

I'll be honest: I think his comment was pretty terrible, and I'd probably roll my eyes and ignore it if I saw it in-game. But your response was worse, in my opinion.