I don't know the exact strategy Claudia used, but I remember a little bit about it. Even with an overnight range breakout, there were other ways to play it, and I think others did. You could play the breakout directly, you could wait for some retrace, you could look for confirmation that the breakout had momentum etc. I don't see how you can say it was bound to fail, or that the results were just good luck. Its results were random, but then so are everyone else's pretty much. What did it have going for it? Well it required that a new low or high was made since the overnight range (so could be with trend). It required some momentum in the trade direction. These are not awful things to have on your side. If you manage it well, I see no reason why this can't be profitable.
Trend and momentum are not a rational basis to trade on? Hmmm.