Calling it a Porting Disaster would be an understatement. Many people have been comparing BAK to Assassin's Creed Unity when pointing out what a buggy, unplayable, and unfinished mess the games are. Right now, only 32% of nearly 9000 user reviews for BAK are positive.
Oh, and it's the first "AAA game" release with Steam's new refund policy in place. Suffice to say, a lot of people were making use of that. To the point it's been rumored WB was losing money on how many games were being refunded. As of about 8 hours ago, Batman: Arkham Knight was pulled from Steam and now has a new re-release window of Fall 2015.
