[BruceZ]

But in these loose-aggressive games if you have a 1% risk of ruin then 1 in a 100 2BB/hour players will go broke?

That's correct, if their standard deviation is 24 bb and their starting bankroll is 663 bb. On the other hand, if they lowered their win rate to 1 bb/hr, and cut their standard deviation in half, then only 1 in 10,000 would go broke with that bankroll. Same thing if they doubled their bankroll.