I believe it is 55 more or less btc mate and not 60+? Correct me if I'm wrong but that is how my computation says about your photo.
55 is still a huge amount of btc . 1 year later the price of btc pump but i doubting if he have some btc left because he was also a big bettor . he is lucky if he decide to kept his btc a year or more for savings . big bankroll
Anyway about the question there are no proof that large enough bankroll can surely beat the house edge
there was a thread here before , i think that was from desiek where he shows a proof about beating the house edge . im a long time player and i tried playing with small and big balance and i can say that big balance will have you more chance of winning .