"The Harmonic Pattern CRAB is yet another discovery by Scott Carney and is identified by its long stretching swing points. In the crab pattern the PRZ level at swing/pivot point D is overstretched and shoots beyond the initial swing/pivot point of X. This is the main key difference between other harmonic patterns. The crab pattern, while easy to identify requires a bit of skill in trading the patterns."
Well, mate. If you are talking about Scott Carney rules you should use the word "Harmonic patterns". He regestered a copyright for these words and all related issues. When talking about Tradeempowered ratios you should use the word "Advanced patterns" or "Advanced formations". This is done to show that Tradempowered guys didn't steal Scott Carney's mental property but have done their own market research and elaborated their own ratios and patterns. Cheers.