Well, if experience and training aren't enough, then what IS the necessary criteria? I mean, yes, Steph has made a few blunders during her career so far, but she's got a never-say-die attitude, she's ready and willing to learn from her mistakes, she takes the initiative - what's the problem? While I'm not usually one to cry sexism, I think that may be largely the issue here. If Steph were male, Batman and Robin would have growled and grumbled and made threatening noises, but eventually they would have accepted him as another one of the Gotham crimefighting fraternity. Instead, they keep telling her to go home and hang up the costume. Does this seem at all familiar? The first appearance of the original Batwoman? Same thing - "This is too dangerous for a woman - go home!" (Of course, that WAS the early 1950's, before the word 'feminism' had even been created, but still.) Huntress? They've been making threatening noises at her for years. Batgirl, the original one? If you believe the 'Year One' treatment, she got the cold shoulder from the word go - it was only editorial policy that made Bruce soften up and accept her. They've been doing this for YEARS. Also, a secondary factor may simply be that they don't think she's grim 'n gritty enough. 'This isn't a game', they growl, teeth locked into threatening Liefeld-style grimaces. 'Crimefighting is tough and brutal and full of angst! Stop being so GD cheerful! You're making us look bad! Stop with the... no, don't make a quip, you aren't listening; STOP SMILING! THIS IS GOTHAM, DAMMIT! YOU'RE NOT ALLOWED TO SMILE, UNLESS YOU'RE THE JOKER! CHIN DOWN AND LOOK DOUR!'