well i wouldn't be so skeptical. those marks are likely right on the money. proof? remember the village mark where there is a lot of over draw the radeon worked through it rather nicely. case and point, ati has a good card, on their hands... if they continue to improve their drivers as they are now, they'll be on top in a few product cycles.
as for their drivers sucking i think not. at least unlike nvidia they don't have hardware incompatibilities ie. your hardware doesn't work... can't be fixed. second i've seen bigger driver problems on nvidia boards than ati. just me but i've never heard a single complaint out of any one i know PERSONALLY that uses an ati card. me thinks this is nvidia's amazing lying... i mean marketing department at work.