So on bitvest with in 12 hours or so max betting and won over 60 btc.
He was down a bit of btc then turned it into +60 profit.
this is just dumb luck and i never trust these super high bets because it is hard for me to believe that someone is willing to risk
a couple of thousands of dollars on a pure luck game.
My question to you "Can a person beat the edge with a large enough bank roll?"
i think it is possible. although i have never tested this but i believe that with a strategy like martingale if you start from a very small bet size and have a very huge bankroll you can win and beat the house.