Most of Crawfords stoppages end with the opponent still standing... very strange

Does anybody find this strange that most of crawfords stoppages end with the opponent on his feet? He seems to be a fraud. Porter was still on his feet when the fight was stopped, so was kell brook, so was Mean machine, so was Amir Khan, so was Jeff horn. The only person that was down when the fight was stopped was a guy with one leg named Benavidez.