It's statistically even across genders. Our nervous systems are basically the same.
Most people face sampling errors when looking at small sets of people to make this call, and fail to take into account lots of aspects of social behavior that alter the way one gender may respond to being tickled in a public situation (Men are taught to be more stoic etc)
But on average the genders are about equal in ticklishness.
I believe as young children, it's about the same. I remember from my childhood just as many wildly ticklish boys as girls. But then as kids become teens, then adults... ticklishness is usually seen as cute in women, versus submissive for men, and therefore men tend lose it more often. As covered in other threads, the mind is a key part of being ticklish, and truly not wanting to react to it is definitely a component, especially over time.
On another note, a pet peeve of mine is people who repeatedly distinguish individual anecdotes from statistical averages -- like it's some win for social justice to point out that exceptions exist. "You said men are taller than women -- well, not every man is taller than every woman." Thanks, social justice warrior for lowering the intelligence of the conversation.
surely it's down to the actual person themselves and not gender, as i bet there are some men more ticklish than women and some women for ticklish than men