It is nice to see a win like this but most likely there have also been a lot of losing bets before and after that one.
True. And there were as I explained to another guy thinking this win as sheer luck...
One can increase his winning chance by doing a trade off with expected payout and it seems this winner actually did that. U think that this guy has won huge amount with 6.25%, is because u r looking at only one bet. But, if u look at the whole board, it seems like from 681 to 692, all bets are his. So, in reality, he played with 6.25*(692-680) = 75% winning chance.
All u need to do is place multiple bets on multiple options.
Don't get too hyped when you see wins like this, it is not likely to happen to you.
True again. That's why I said the following...
Control is another name of Gamble.