A lot of people have said that haye-chisora will look like haye-ruiz while the other side say that chisora is a lot better than ruiz.
The way I see it is that ruiz is better technically and throws straighter shots behind a half decent jab but chisora is stronger and has a better engine. I don't think there is too much between them in terms of toughness and chin. Chisora may recover a bit quicker because of his youth and fitness but he can be hurt. If they squared off I could see Chisora taking a close decision in a ugly fight.