Parker wouldn't be able to cope with AJ. He boxes well at times but shows his inexperience under pressure. He gets hit too easily and despite the fact it went 12 rounds I've got doubts about his stamina.
It's one thing doing 12 rounds when you can go for a little walk or take a round or two off, but when you are constantly either applying or under pressure, it's a different story.
I know some people will say the same about AJ, but he has freakish power and I don't see him having to go 12 that often. I'm not saying he may not ko'd himself at some stage, but that's HW Boxing.