Has a point. A possible reason: NRO bloggers try hard to be honest and not to let their partisanship interfere with their analysis. They want to describe what is happening, not what they hope is happening. They bend over backwards to be fair.
This is something that I genuinely think is more common among conservatives than liberals.
Listen to David Brook vs. Mark Shield on NPR. David says what he thinks and criticizes Republicans often. Shields is always a cheerleader for Democrats.
Think of Tucker Carlson vs. Paul Begala and James Carville on Crossfire. Same thing.