I get that the comment came across as arrogant. However you misunderstood the point. It's not that I'm very smart, but that a superior intelligence was not the factor in me finding glasses in his reasoning. It can't be, because as I pointed out, my intelligence is not superior to his.
Of course I do get your point that I should consider whether both he and I are simply not that intelligent and that's the reason I find flaws in his arguments. It's logically sound, but I'll cling to my doubts regarding it's accuracy :-)
Argument is an art of rhetoric, not logic. Many very smart people make flawed arguments, sometimes instinctively, sometimes deliberately.
I'm not saying they should. In fact, I'll now say: they shouldn't. But whatever defect this habit is evidence of, it isn't necessarily a defect of their intelligence. Sometimes, but not always, or even usually.
Of course I do get your point that I should consider whether both he and I are simply not that intelligent and that's the reason I find flaws in his arguments. It's logically sound, but I'll cling to my doubts regarding it's accuracy :-)