OP good job. Instead of losing your head and insulting someone or acting like an ignorant redneck gun whacko you calmly explained the differences using facts and sound arguements and actually possibly changed a mind who may go out and even tell his ignorant voter friends.
Like Travis said I don't think this was a real liberal just an uniformed ignorant voter who only gets his news from John Stewart and occasionally CNN. I think this describes most of the "liberals" in this country. Just independant people who actually probably lean conservative but when you listen to the MSM no wonder they think Repubs are evil and guns are bad etc. That is what the news tells them.
