The 10nm might not make a differance but the fact it can achieve that range while lifting more passengers, more cargo, while giving a seat-mile cost 15% lower and fuel burn in excess of 20% lower than the A340 does.
And Yes, it is the longest range aircraft in the world, even if was only by a single mile you can bet your life that the Airbus PR department would make a big deal of it, and theres no reason Boeing can't do the same.
Boeing played us people
how exactly did they achieve that, they have always said this...
Provisions for up to three optional fuel tanks have been added in the aft cargo area of the 777-200LR Worldliner to be able to fly a range of 9,420 nautical miles (17,446 kilometers) with full passenger payload (301 passengers). Even without the optional fuel tanks, the 777-200LR Worldliner can fly as far as the competition, the A340-500.http://www.boeing.com/commercial/777family...e/lr_back5.html
No part of that is misleading.