The right-wing side is always going to have more judgmental types than the left side, because more behaviors offend conservatives than offend liberals - just by the very nature of the two philosophies. In fact, the nature of the two philosophies also lies at the heart of the criticisms against them.
Every right-winger will be stupid, moronic, less civilized, less advanced. Every left-winger will be a condescending, loud-mouthed know-it-all with no common sense.
What I find interesting is what it takes to WALK BETWEEN THE TWO. It's darn near impossible. A well-reasoned argument that doesn't come to the conclusion the left is the sign of the "lack of intelligence and understanding." A differing philosophy that rubs the right the wrong way is the sign of something between a heretic and a rabble-rouser. As a result, you'd better adopt *ALL* the beliefs of one side, and get into their "club."
Some try by being something like "fiscally conservative, socially liberal" or some such mix and walk between the two sides. But the fact remains that this often makes you an outcast to both sides.
The one big difference I see in moving between the two is that the right offers a way in, whereas the left tends to be more exclusionary. People are more forgiving of being "Godless" than being "stupid," apparently; it seems to be easier to say "I was wrong" to a conservative than to a liberal.