What a devastating, meticulously reasoned comeback. Kudos to you, and kudos again! Clearly I am no match for your debating skills. [ /sarcasm ]
I think what this really indicates is that I overestimated you in crafting my response, which is why the above sarcasm has become the more appropriate way of dealing with you. Sorry I wasted my time. (By this I mean that I feel sorrow for having wasted my time. It is not an apology to you, or anything.)