I dunno, wouldn't seem quite like sex if the only sensation you can concentrate on is around your shaft, as opposed to real sex you got her body hitting you all over as you go for all the positions as well as that extra weight you feel when it comes to slamming it, or the sounds and all that extra heat and grabing, scratching and what else. A fleshlight also isn't going to quickly switch from vaginal to oral feel when you get ready to cum.
So yea if you have to sit there with a hand-operated-girlfriend and 3D porn, claiming how much better it is than sex, you're probably not having enough actual sex.