I assume you're being purposefully argumentative. Phil Lo Greco, in professional boxing terms compared to the top tier fighters, is absolute ****e.
There are few truly world class, A+ boxers like Lomachenko, Uysk etc. Then a good crop of A-/B+ fighters after that, then basically young starters or fodder. Christ, many boxing aficionados I've seen or spoken to reckon there's about 5 good heavyweights and the rest are ****e. The A-level talent really is that thin.
It's like comparing a Real Madrid player to a Scunthorpe player, both would obviously be incredibly better than most footballers and the general public but one is obviously a lot better than the other.
You seem to love taking the contrary point, regardless of what it is, when it comes to boxing. Therefore you're either A) On a massive wind-up which is pathetically sad or B) One of those blokes who watches a boxing match once a year and reckons he's Freddie Roach.