Page should take it at his best, but if he had one of his regular off nights, then everything is back in play.
Obviously Greg Page should win at his very best, i think he's far more talented than Chisora. But Page very rarely showed up at his best in must win fights. Overall i think Chisora could win a decision vs a lazy unmotivated Page, but since in these mythical match ups we always choose fighters at their peak. I'll go with Page winning a decision in the region of 8-4.
Page on song takes a clear UD over Del. But that was what we expected in Greg's fight with Trevor Berbick too.
Page easily by wide unanimous decision. Especially if he's focused and in shape. Chirosa just isn't in Page's league skill wise. Chirosa also isn’t much better (At all) than Page in his dedication to getting in the ring in top physical condition , his gas tank usually get him a good five or six rds.
Well peak Berbick isn't that much better than a peak Chisora in terms of overall level and ability. If Page is even slightly out of shape or lacking in motivation, this could be an incredibly ugly, hard to score fight. I'd still favor Page, but he could end up winning a controversial split decision in a match nobody would want to watch again with tons of mauling/arm punching/shoving/etc. Page's jab and superior defense give him a slight edge.