I dont think that there is someone out there thinking "today I am feeling lucky, lets roll with 100 BTC" 
But still a very impressive number ...
But still a very impressive number ...There are not many high rollers that play like that. We've got a max win of 20 BTC per roll so they would have to go 1.2x with a 79.17% win chance. Need some balls to do that.
Yep, big balls, or 5k BTC in wallet
But 20 BTC is the biggest win, or the biggest bet?
About the guy that have played 136 BTC, it for sure is some bot that play little amounts without a break - Is this allowed by Freebitco.in?