I think there is a most definitely a difference - it’s such a new scenario though in that puberty blockers have not been in use for a long enough period of time. I don’t think there is enough research has gone into puberty blockers at all.
So in terms of physicality for sporting competitions - I imagine there would be a difference in those two scenarios.
In terms of socialisation - I think it would be a huge difference between the person born male and transitioned as an adult and a person who is transitioned in childhood.
And a difference again in the socialisation a male child who has been transitioned in childhood to that of a female child. It is an interesting thought.
I actually think kids should be left to be kids and wear and express themselves in any way without having to be told that to do something outside of social norms makes them the opposite sex. I’m increasingly seeing these stories and it’s devastating. I believe there is a tiny percentage of children (mostly male) who do feel true dysphoria at an early age. But the majority of the time it’s just kids wanting to be and express themselves the way they want to. It is society telling them it must make them ‘born in the wrong body’.