CPOW has a classic textbook head-and-shoulders formation. It is not just a spike and pullback.
CPOW's head-and-shoulders is after it's spike-and-pullback. It could be used as the definitive head-and-shoulders. It's about the most well-formed one I've ever seen.
Maybe you should try looking at charts in linear scale? You can't really see the patterns in logarithmic scale. Myself, I don't see why anyone would use logarithmic scale.