I don't think comparing crazy blog commentators is a fair standard for either side. I'm going to come up with something I think is a bit more fair: compare the intellectual component of each side.
* Left intellectuals (ie: writers at the Guardian, Jacobin, etc.): tendency towards hero-villain thinking in domestic policy/class struggle, a tendency to apologize for violent regimes that purported to be engaged in class struggle. Occasional cultural silliness, and fairly commonly prone to apologia for anything a perceived "underdog" does whatsoever. Otherwise, generally quite cogent and able to come up with extensive critiques of the status quo and platforms of action.
* Right intellectuals (ie: the National Interest, The Economist): tendency towards hero-villain thinking in foreign policy, leading to support for violent regimes purporting to "keep the damn dirty Leftists out". Large amounts of cultural silliness, especially prone to believing that hierarchies of authority just are morality, especially prone to tribalism and a bizarre fixation on people's recreational proclivities, especially sexual ones. Often cogent, but not actually consistent in platforms and critiques: usually more focused on rationalizing the existence and actions of some power-hierarchy to which the intellectual is loyal than with establishing any universal moral principle at all (other than hierarchy itself).
It's pretty damn clear which side I'm on, but I also can't think of any facts I've neglected at the moment. Worldwide, the separation between Left and Right seems to really be about principles versus hierarchy.
