I think someone mentioned in another thread that you can say that certain teams with a loss can still be better than some undefeated teams (case in point, the Bucs). I think it works in reverse, too...would you say the Eagles are a worse team than the Cardinals? The Lions? The Texans?
I think they should probably be ranked below the Raiders (though not much), but I really don't have a problem with where they're ranked besides that.