>If 757 was such a great plane, why couldn't they sell them? If they could sell them, I assume that they wouldn't have shut the line.<
You mean all 1049 they could not sell?
>The 757 in a one class configuration could hold what, 250 or 260 passengers?<
240, it also has longer range and cruises much faster. Still, it is heavier and does not have commonality with the 737.
Neil is right about the -900 being the current black sheep simply because Boeing rushed it to the market to apease the needs of AS
, and did not fully engineer it to its greatest potential. This is why it has had its ass handed to it by the far better thought out A321 (which also had really really short range in the -100 version and was improved when Airbus saw a market in the US).