I think that article gives bad advice, because it encourages you to brag about yourself on dates. If you brag on dates, you give off the impression that you want to impress the broad, and that is considered desperation, not confidence. You should be making her try and impress you. Not only that, but the more you tell her about yourself, the less of a mystery you are.
Personally I think that the guy's hookup was a fluke. The girl sounded like someone who isn't used to getting approached (embarassed after sex, what is she amish?). A secure confident woman will see right through your bragging and will ditch your ass.
There are many ways to "ooze testosterone" other then bragging. Unyielding eyecontact, kino, low voice, etc all achieve the same result, and don't make you look desperate.
You're better off reading Pimpologist's methods in the bible then bothering with the "ooze"