Yes as far as I can see the "PUA" ethos differs from regular people who are good with women in two ways:
1) The quality of women pulled - PUAs are generally only interested in 8s,9s and 10s and this is what they devote themselves to learning. I had a couple of room mates at college who were very good with women and generally came home with a woman every time we had a night out much to my envy. But, looking back, these were actually very average value women (or low value in a lot of cases). PUAs would actually turn down such women and consider chasing them a waste of time.
2) Consistency of results - In my late twenties I had a room mate who was a very handsome, charismatic, dominant guy and yes had a way above average success rate with the ladies, and generally they were pretty high value ladies as well (some times less so). But nevertheless I watched him take lots and lots of embarassing/hilarious crash-and-burns too. It was just that his natural qualities increased his hit rate to the point he generally got something eventually. PUAs as I understand it are literally beating women off them. They have to decide which one to take. They can go to the mall, pick out a woman and take her home etc. etc. Also the sex is apparently pretty spectacular as opposed to the comedic drunken fumblings that regular people enjoy.
As to how the regular people do it it's a combination of dominance, self-assurance, not supplicating and coming across as competent. Women like competent men. Self assurance I would say it's the main thing. It prevents them supplicating.
Nevertheless confront them with a woman who is significantly higher value than them and they will soon start supplicating and generally going to pieces. PUAs don't. Also regular people pay less attention to things like logisitics, boyfriend destroyers, advanced psychology, investment, etc. And they get the subtleties wrong. So for example their teasing will be too harsh and personal and their commands will be too obvious and graceless.