Personally, I'm more concerned about the male Marine pullup standard being at ONLY 3!! That's sad, very f'n sad!!
I think the 3 pullup rule was just so the old timers (lifers) could past the pft. Many were barfing after the 3 mile run, haha.
As far as boot camp we ate 15 feet of vertical rope every morning before breakfast and packed m-14’s at port arms for 3 months, we had arm/shoulder strength. Spiderman never had anything on me.