There is a reason why Joshua has not fought Chisora already in his career,too much risk with no reward.
AJs got fast hands and disguises big uppercuts. Delboys tough, but Parker was hurting Derek with numerous uppercuts. He just didn't follow up. AJ would and he'd hurt Chisora .. KO <6.
David Haye a blown up cruiser weight stopped Chisora. If Joshua has anything left he would stop Chisora easier.
It would have been a good fight a few years ago and a serious risk when AJ was on the way up but it's an easy fight for AJ at this point and one I wouldn't be hugely surprised they made if AJ loses to Usyk again.
AJ catches him coming in with a straight before Chisora can find his own power which really is only the overhand right
Chicora has never beaten a top fighter. No chance he is going to start now or ever. Joshua easily, probably by KO.