Many middle east/ Asian carrier also use Atlantic for one way while Pacific for flight in another direction, this does not constitute Circumnavigation
And as I explained on Talk:Non-stop flight, the actual distance flown by the flight vary from day to day, someday it flied over 15000km but other days it flied less than 13000km, amd thus the statement is not always true. You can also read the talk page for further discussion.
