Waggy is right. It's best to choose your battles, lest you get into a protracted land war. I mean, I have no problems going head to head with the guy, but trying to respond to every comment, or even every post, is a losing proposition. He makes up for in quantity what he lacks in quality; if you play on his terms his confusion fu will eventually get the best of you simply because it's impossible to sift through that much bullshit in real time.
Also, his favorite tactic is probably to flatly deny reality, which is hard to counter because it's inherently illogical. We all know that 1=1, but he will argue that 1=3 all day long, and proving 1=1 is hard because... one just equals one, there's not much that can be said on the topic.