You are wrong.
Air India became the first Asian carrier to operate an all-pax transatlantic flight in 1962 when they operated a 707-437 on LHR-JFK.
Between then and now they have operated transatlantically with 707-437, 707-337, 747-237B, 747-437 on a variety of routes including LHR-JFK, LHR-ORD, LHR-YYZ, LHR-YMX, LHR-YUL, AMS-JFK, CDG-JFK, CDG-YUL, FRA-JFK, FRA-ORD, FRA-YYZ, FRA-YUL, FRA-YMX.
SQ is a newcomer to transatlantic routes in comparison.
"The A340-300 may boast a long range, but the A340 is underpowered" -- Robert Milton, CEO - Air Canada