Elon faking his gaming achievements, and (most likely) many other achievements,
is the same thing as Alexander The Great and Roman emperors propagating they were descendants of Gods.

The reality is simply that no single human can be that great at so many different things. Even just becoming world class at one thing takes a giga brain a lifetime of dedication.

The dudes who are in the top 10 rankings of any popular video game are all highly intelligent people who nolife the game 24/7.

You can't be as good as Faker at LoL, beating "everyone you knew" in chess AND teach your engineers to build rockets.
You just can't.

But creating this larger-than-life persona by bullshitting nonstop is what made Elon the by far richest man in the world.
And to bullshit that much, and fool even smart people for so long IS an impressive feat.

I still respect Elon a lot, and I always have, but he and Bruce Lee are not real, they're more legend or myth type of stories.

Bruce Lee in his only real fight with witness testimonies couldn't even beat some other random Chinese Kung Fu dude.

Ali would have destroyed him in a fight.

But that's fine, the concept of Bruce Lee, although fake, inspired a lot of greatness in other people. 
Just as the story of Achilles inspired Alexander.
And just as the story of Elon the Martian made Chinese costumers believe in EV.