The "she wasn't in the Silver Age" argument would carry more weight if he'd focused only on the Silver Age. Now there's definitely a favoritism there, but he covered a lot of things from the Golden, Bronze, and Dark Ages.
Batwoman I got several pages, Cawoman got this.
Julie Madison (girlfriend 1) got several mentions and an appearance. The death of the Graysons was obviously there, along with several pages of Silver Age Batman and Robin (and why not? It's a big deal). Ace was there. Alfred "dying" and becoming the Outsider? It's back, despite the fact that nobody in their right mind would ever want it back. Dick becoming Nightwing is in there. Bruce and Talia embracing got front-page priority (because they're going to conceive Damian, the bestest character in the whole world according to Grant [and the worst character in Batman's history, IMHO]). We saw Batman fighting Ra's, Joker's 12-way revenge, Batman vs. a werewolf, Batman vs. Man-Bat (from back in the days when a Man Bat was a threat, and you didn't need a couple dozen ninja Man Bats to make Bruce go "how alarming"). Batman fighting Deadshot, Batman meeting Jason Todd, Jason becoming Robin (that one gets a whole page), Jason's death... they're all there. Tim's in there, Bane's in there, Azrael's in there, No Man's Land is in there, Hush gets a big panel, as does the death of Jack Drake... Barbara gets that one Killing Joke panel everyone uses, the one where her back is to us and the focus is on Joker. Cass is a shadow (maybe) in the No Man's Land panel. Morrison makes room for The Ten Eyed Men from his own 52 story, and the Zur En Arrh thing. He fit in a lot of stuff, and while there are a few places where I very selfishly wish he had showed more attention to certain characters, Selina's one I can point to and say "it's not just me having my favorites. That's the writer doing something genuinely wrong."