This is indeed going to be the heaviest rocket in existence. SpaceX is truly pushing the envelope for the available launchers. I'd really appreciate if they's bring to market the F-9H.<p>However saying that it's second only to Saturn V is incorrect - unless followed by words "in the USA". That's because ill-fated N-1 was bigger - and Energia with both successfull orbital launches was bigger as well, by the payload on LEO.<p>Even Space Shuttle would be bigger, if you'd count by liftoff weight. That's kinda interesting - the picture in the article mentions existing launchers and Space Shuttle, which doesn't fly anymore, and that's understandable - people can compare to familiar things. But to conclude that it's second only after Saturn V... I guess SpaceX marketing department isn't very concerned with how misleading their statements are :) .<p>Come on, SpaceX - you don't need those exagerrations, you're good as you are - don't spoil your image trying to artificially look better.