Not sure what you mean when you say it's because of the Super Sons. With Dark Crisis: The Dark Army revealing that Damian apparently always ends up being Batman, DC putting Damian in charge of coming up with the plans to beat the villains both in Dark Crisis: The dark army and Lazarus Planet and Batman telling everyone to listen to his son's plan in the preview of Lazarus Planet Alpha it currently simply looks like DC or at least Mark Waid is pushing Damian into the position as Batman's eventual successor again.