If Jason looked older in the movie to you, that's just pure coincidence. The movie also starts with Jason being killed by Joker. dikk was already Nightwing at that point.
Then how come D!ck doesn't know nothing much about Jason? and he had
in that movie and bragging about how skill and talent Jason was better than him when he saw Red Hood?Basically, Jason got more talent than D!ck.
Why Batman kept wanting them to play as "Robin"? but at least D!ck got tired of it
Why would he want his son to play as "Robin"? Ain't he too old for playing as Batman?...why hasn;'t he passed on to his son as "Batman" especially his father is Bruce and and Original Batman and, Talia Al Ghuls's father is Ras Al Ghul??.....I'm BUZZED but I know i"m not a huge nerd comic books but I just want to know and some of it not make sense to me.....I just want you school me.

). So that's probably why dikk wouldn't be familiar with Jason's skillset like that, meanwhile Bruce was
at some of the shyt Red Hood was doing because it looked vaguely familiar to him..........