He's probably closer to 14 now, if he isn't already there....Just saying. He's been 13 since Rebirth started. And if Jon was 11 before Bendis swooped in and ruined him, then about a year has passed since the the start of Rebirth.
That said, yeah I don't expect him to win this tournament. At least, he shouldn't. It all depends on who else is entering.
That all depends on what you want out of this. His age has nothing to do with whether or not the character is capable of telling a good story. Especially since his last solo was really good and that was back when he was 10-11.
Guess it depends on where he and Ra's stand right now lol
RSOB begs to differ both in world and real world [only Grayson outperformed it of the bat kids titles]
Damian can win and has won. he has the most impressive feats of the Batkids [baring Dick ] relative to age.
I think that what will come of this is that at the end he dons the Robin colours on his own terms or at some sort of compromise with his dad.