^ That's false confidence. That's a false perception of yourself.
You're simply acting.
But overall, false bravado trumps being shy any day of the week. I suppose if it's a binary decision, one over the other, sure "faking" works better.
The whole point is to have this come with ease. One problem with "faking" it, is that your baseline behavior, to a woman, only seems genuine. So when you're past the attraction phase of a relationship, and then fail her moderate sh1t-tests, she quickly dumps you, resents you, or flakes on you because you're not the man she thought you were. You passed her initial tests in the attraction phase of the pickup, but failed the rest onward.
It's been said on here, and it's a great way to look at it. You go from trying all kinds of gimmicks, ploys, whatever, because you have nothing to lose. Then, once you "got" her, you feel as if you "finally" got a girl by these tricks that aren't natural to you. So you switch from having nothing to lose, to holding the line. You subconsciously develop a supplicating mentality, where you fear taking chances and running game on her like you did before, because you feel like now you do have something to lose.
The key is to embrace your masculinity, improve yourself while growing your confidence, and approach women legitimately (not necessarily directly), with your own style and personality.
The gimmicks and tricks that are often talked about in the seduction community only serve to break you out of your shell and out in the world. They're for amateurs. You have to get used to approaching girls, reducing your approach anxiety, and building up the proverbial scar-tissue that comes with getting rejected. THEN your fear largely subsides, or is manageable, and THEN you can truly pick up with the real confidence that the real DJs have.
It takes effort, though. And I'm afraid some guys are just looking for an easy trick to get them laid.
Becoming great doesn't happen by accident.