Wet or dry jelqs for length

I was reading some stuff about jelqing on another PE forum, and the majority of members there believe that wet jelqs mainly effect length while dry jelqs effect girth. I haven’t seen anything regarding this in any of the tutorials here, and I was wondering if anyone here has any experiences that could prove or disprove this theory.

Moving blood around in the penis by creating pressure on the outside is a jelq. It doesn’t matter if you use loose skin to help your fingers glide up the shaft or a lubricant. A jelq is a jelq and jelqing creates both length and girth by expanding penile tissues. You use the method that’s the most comfortable for you.