Level 200 noblesse?

I figured as much, but question.

If it is a hack, then why isn't the 120 cap a 'hard cap'?

Same reason why 200 isn't a "Hard cap". What he means is every class / job is level designed the exact same way, the only difference is there's a "Wall" for certain classes / jobs. In this case, there's a "Wall" at 120 for CK and a "wall" at 200 for every other class / job in the game, minus GM / Super GM in where their cap is 255 aka the 8-bit cap.
Just because it's there doesn't mean people can't bypass it through illegal means. How else did the potential hack come out? People are forcing their character levels past 200, client side.