score:9
As per this flyertalk post
Since you're saying 9J is a bassinet seat, you're talking about Prestige Sleeper, not the newest product. I believe bulkhead seats have the screen coming out of the side armrest.
The newest product (Prestige Suite on 748 and newer 77W, and 789) doesn't offer bassinet in J. Cruel, huh?
Edit: this has been confirmed by Korean Air on Facebook.