Is It True That The Boeing 777-300ER Is Heavier Than The Airbus A350?

While the primary competitors to the Airbus A350-900 are the Boeing 787-9 and 787-10, the top competitor to the stretched Airbus A350-1000 is the Boeing 777-300ER. Following the termination of the Airbus A380 and the Boeing 747-8, these are now the flagship products of Airbus and Boeing. Boeing is currently working on replacing the Boeing 777-300ER with the delayed 777-9 in an effort to keep it competitive with the A350-1000.