Having COC means you're born, generally speaking, with a higher potential than those who don't have it. It's doesn't mean, however, people who're not born with COC can't be as strong as or stronger than COC users. Some COC users die without fully reaching or even realizing their potential. With that being said, we can't really use COC to scale characters to be above other characters of similar caliber. It's definitely a plus to the person who has it but it can't be the sole reason for him to be over his peers.