Byrd is so awkward to fight ,he could have Joshua struggling to land .Wouldn't surprise me to see Bryd getting a decision over a frustrated AJ.
AJ. At times it would look like Ike vs Byrd in rounds 1-4. I'm not sure whether AJ wins by decision or stops game but small and featherfisted Byrd.
Joshua is a big man with fast hands and power. That much is clear, but he's more of a athlete than a top boxer who can control the action with his jab. I think he's win here, but not by a huge margin. Byrd is tough with good defense, and a south paw. It might look like Joshua vs Parker, with Byrd having a few more moments than Parker did. Joshua UD, something like 8-4.
AJ still looks lost at times and has nowhere near the output or gas tank that Ike did. I think prime Byrd can win this.
I think Byrd could do it. He was good at picking his spots and AJ fights deliberately, which would also suit Byrd as he might be able to outwork him.
Maybe not full fight ,he's bound to get tagged at some point. But ,as he did with Tua he'd survive and possibly win .