When Airbus announced its long-range version of its single-aisle jet, the A321LR, the company’s chief rival claimed the market for the plane was too small. Boeing Co. (NYSE: BA) may have change its tune, though, as it was reported that the company was talking with potential customers about a competitive airplane dubbed the 737-8ERX. The war of words — never entirely cool between the two giants — may heat up again with the report Tuesday at Leeham News & Comment that Airbus’s chief operating officer-customers, has unloaded on the Boeing plan. Leeham quotes John Leahy:
