Damian Wayne resurrected

DC's editors decided they wanted to resurrect the "son" Grant Morrison came up with several years ago:

It turns out that Damian Wayne will be returning to life by the end of Robin Rises and taking up his old job. This isn't necessarily the most surprising outcome for anyone who has been reading the series. Robin Rises has revolved around Batman using any and all means at his disposal to resurrect his dead son (who was killed last year in the pages of Batman Incorporated), including teaming up with Ra's al Ghul and traveling to Apokolips.

I wonder why his alleged son is so important to him, but not minor characters like Sue Dibny, Elongated Man, Jean Loring, and even Sarah Essen Gordon? Resurrecting Damian in itself is okay - this is a sci-fi world, after all - but if he's so crucial to Batman, why aren't various other heroes and co-stars who suffered offensive fates? Near far as I know, Katma Tui of the GL Corps is still in the grave, and could make a perfect candidate for resurrection too. This storyline with Damian makes it all just plain laughable.