vs really good defenses was spotty at best and he did not play 1 elite defense in 2020. Only played 1 good one. In 2019, he did not play any elite defenses, but played about 3 very good ones. He only played well vs USC. In 2018, he did not play well vs the few good defenses he faced.
NFL will take him without that proof because of his physical skills. They do that frequently. Some work out. Some do not.
ZW could have answered any and all questions in 2021. Actually, he still may. But in the NFL.