so his bet was only 0.0007 btc and he won 2 bitcoin?
not bad at all
Obviously it was not bad at all, because it was very lucky bet. The chance to hit 3000+ payout is so small, it may not come although you have made thousands bets if you have very bad luck.
Actually, 3000x is not so small that it would not come in thousands of bets. I have seen 10,000x payout results on my dice rolls several times already (but I never bet on it haha,,, I never do more than x100). So I have hit a lot of x100 and when I see the 99.99x I get a little bit sad I did not try for it.
But oh well right?