I think Ibeabuchi's volume and pressure would be too much for Joshua to overcome, and besides, Joshua doesn't have the Chin to survive the punishment, Ibeabuchi by KO...
That fight was something special between two of the hardest men the division has seen in decades. Both throwing bombs at a pace of 175 pounders. AJ wouldn't have seen the second half against Tua or Ibeabuchi that night.
AJ may catch Ike with something, but he also may get steamrolled like against Dubois. The latter is more probable.