Yea because a porn star has insight into how to give a woman an orgasm...
DO NOT use porn as a reference point for how to pleasure a real woman. Porn would have you believe -
You require a cock larger than 8 inches.
Women cum with all the ease of one index finger blindly stabbed in their vagina and the tongue action of a dog feverishly licking its owners face.
Anal sex can be accomplished with only spit as a lubricant. (Try that one at home, I dare ya!)
Every woman will happily ***** your load or lick it off whatever part of their body you are invited to aim at. (Ha!)
That every woman has the same physical confidence in her own body that an orgasm can be guaranteed every time. (Cause lemme tell you now, it aint!)
If you want to pleasure a woman, do not treat them as something that can be generalised by one single self help book. Each woman in this world is unique and what works for one, probably wont work for another. Learn with the one you have what makes her tick and go from there!
(Or you could try what youve seen in the videos and I bet youll be sat with a book on masturbation tips!)