I was watching a workshop yesterday on approaching. The instructor gave the students solid openers.
There were 2 models that were used as targets in the workshop. The models were really hot and although a safe environment I think that the students definitely felt the pressure.
The students approached using the given openers but genreally came across as weak. The point is that everyone needs to know that a confident demeanour and body language is of paramount importance.
Without this, the most brilliant openers will fail. I would go so far as to say that a confident PUA doesn't even need the opener, he would naturally lead the girl or set in the right direction and would be able to get away with much "riskier" escalations.