Although this is an old post this guy was just lucky.He played with a big amount and won those rolls but if you dont quit you will lose everything.
my guess is that he was betting a not so big amount and loose and then he bets a slight bigger and then looses again and his last bet could be verry huge and he got lucky to win it but its win couldnt be consider really big due to his past red bets .
That is also the strategy slots providers use with their slot machines,they entice you by giving a lot of winning combinations when playing with minimal bet and soon as you increase then it is soon game over.
not only on slots but this is what i notice somtimes on other games . not only we but other players also complain with this . i dont know if its true or just a coincedence because if we see other big gamblers win huge with big bets