Lattimore was the most talented, and most injured corner in years. Humphrey was one of the more raw high end corners but is the only db who legitimately has a Jalen Ramsey ceiling.
Lattimore was equally raw, but had a skill set that masked his rawness, you can be raw and inexperienced but if you have length and you mirror every single step the wr makes then you won't get tested or exposed. Humphrey has the higher ceiling and no injury history(knock on every piece of wood ever) being the better overall athlete, a skillset that could make him an elite CB or safety, and he and Jalen Ramsey have a mentality that is rare for dbs and the kind of mentality you want. Lattimore was the less diverse and riskier player.