I have seen Moro dn in videos . seemed.a dog with much presence ..ring attitude , and super head. I believe you also saw Nilo rb . I agree about medium sized as also there has to be a limit, as the breed has to maintain nobilty, with elegance.
Also agree no probs with a big dog working , more a problem a small dog working poorly constructed.
Another big looking dog Tyson di campo ..and good at long attack
Victor casa balestrieri also looked a big dog