Regardless of how competent the studio was, if they decided they wanted to hit a ship date for the original PS4 game and the two ports no matter what, and the port wasn't ready, this is what you get. People in QA or Programming over at a porting house don't have the ability to tell a publisher to slow down.

Not true: Iron Galaxy, who did the Arkham Knight PC port, also did the Arkham Origins PC port: https://en.wikipedia.org/wiki/Iron_Galaxy_Studios

IIRC, that port had technical issues, but not to the scale of Arkham Knight.

Rocksteady didn't do Arkham Origins. Rocksteady is only responsible for Arkham Asylum and Arkham City.

Technical issues is an understatement. the main storyline wasn't completable.

Which they eventually fixed, only to then say 'no more patches. We're moving on to DLC'