What’s funny about Damian and Jon age difference is that Damian is 13 & Jon is 10 and it’s cannon that Damian completed his first assassination mission when he was only 3, which mean he has killed someone before Jon was even born, you can’ tell me Damian would not use that as an excuse to be the one to call the shots.
“Kid just follow my orders I have been doing this before you were even born!”
“Quit over-exaggerating! we are almost the same age-”
“No you don’t understand, I have LITERALLY been doing this before you were born”