I'm going to disagree slightly. While the site certainly isn't more or less likely to make money, there is an extremely strong correlation with higher volumes. When players win money, they tend to be pretty happy and willing to put churn that money pretty heavily. And as an investor, the bankroll turn over is the primary thing you really care about.
But yeah, I wouldn't really use it as a signal to invest on bustabit if for nothing other than the 10% dilution fee on bustabit means it's only a sensible long term investing option. So even if you expect higher than usual turn over in the next few days, it doesn't change much.