I feel like if he's more mature than most of us, then none of us are mature at all. Take a look at the Tako situation. After Tako harassed J (and vice versa), Tako moved on. However, J did not. Now, I understand that he made fun of his father's death, and he should be held accountable for that, but going out of your way to insult him any chance you get is not an example of maturity. Maturity is resolving conflicts in civil ways, taking responsibility, and looking at all sides of the argument, at least when in disputes. J shows a few signs of it, but it's far from saying he holds more maturity than the rest of MSMG. I will say though, compared to all 12 year olds? You could possibly argue that.