How is realy fuel burn per seat kilometer on the NG series compared to the A320 series.When the Ng arrived in the late 1990,s the wing was bang up to date,but the old nose design was still there with it,s sharp edge cockpit window.If I am not mistaken,the nose is identical with the 707(at least from radome tip and up,while the lower part is a little diifferent)This was designed in the fiftees.Seems to remember that Boeing could not modify the nose without having a new type approval.So my question is if this old tech aerodynamic nose realy is a big drag penalty with today,s fuel prices,or that nose design realy isn,t that important compared to wing design?