Qwark28
Joker waiting room
By jumping back and confirming whether he punchwalked or not you are 100% safe from anything but KW's chest lunge I believe.
The only way to jump before he anti airs you with punchwalk anyway is to be at least +3. Which means you will be doing this after 114 air throw, EX sunstone/macuahuitl, after a blocked poke, a blocked punchwalk etc.