You know what I also think about??? That Jason is mentally younger than he is physically.
Six months in his grave. (Six months dead)
One year in the hospital. (One year comatose)
One year homeless.
One year with Talia.
He only spent two of those years conscious, both seemingly lost to him when he was restored by the pit. If those two years are lost to him, that would mean he's physically three and a half years older then he his mentally.
Also, those two years, he may have been mentally impaired but he's still Jason.
He still is kind, still trying to help people.
Still recognizes who his "allies" are. If not just that Jason has always been soft and forgiving towards women, even the ones that hurt him.
He remembers enough of Bruce that cries when Talia talks about him to Jason.
Of course he's not exactly the same kid. Not after all he's been through even up to this point. He's lost and scared and so very hurt but he's still Jason at his core. Still that kid who steals tires to survive but tries to ambush a gang to stop them from robbing a museum. The same kid who tried to strangle Two Face but tried to save and forgive the mother who was partially responsible for his death.
I'm getting a little derailed. But Jason is just so young! He's nearly an adult but he's still a kid. He can never be who he was but he's still Jason!