It's interesting that Kirito and Haru are wrote by the same man. But yeah, they are
very different from one another.
I think that SAO's writer realized he kind of overdid it with Kirito, and Haru was the result of him attempting to add greater balance and more flaws/weaknesses to his next male lead. And I think he largely succeeded with Haru... although he might have went a touch
too far.
On the whole, I will say I enjoyed Accel World more than I did SAO, though I suspect that's a pretty rare and controversial opinion.