And he's lucky asf, his only post is winning $20 in freebitco.in
In fact, most of them hardly know the existence of this forum.

He's jut too lucky. Congratulations to him on winning the lottery.
Has anyone already counted whether it is more profitable to buy or play this strategy?
I saw a guy had 21 loss in a row, so when he says very large balance perhaps he means more than 10btc .
When you are lucky, you can win a Lambo in just one go. See te guy above who won the Lambo in the round 5. If you're unlucky, you play 21 rounds or games and yet you fail to make a single win. That's fortune and luck.