Mark Steyn would be one of those rare people who would counter Hitchens to a standstill.
Steyn, Sowell, Buckley (the dead one)and I think Gingrich could all better Hitchens. But, that's about it. I think that Buchanan, Liddy and Alan Keyes are all Hitchens' intellectual equals, but they've moved into the kook category just a little too far to be taken seriously anymore.
Hitchens is a Marxist, but at least he recognizes the dangers of the Islamic jihadists.