Parker is extremely frustrating to watch, doesn't dig deep during fights, doesn't use half of his talents
Great stamina, speed, very tough, lacks Ring IQ and he just doesn't dig deep in tough patches, he gets bullied, which shouldn't happen that easily with his size
Chisora on the other hand uses every last ounce of talent he has
As for Parker, for a guy with 21 KO's to his credit, he sure seems to punch feather fisted. Must have gotten those KO's in fights with lesser quality opponents like journeymen or gatekeeper types without looking up his record.