Metallica, Megadeth, Death (first three albums), Atheist, Exhorder, Pantera, Iron Maiden, King Diamond, Sadus... these are all bands who released albums before Human where the bass was clearly audible. You may have written it off as standard during the time, but if you actually look at the majority of albums at the time, it's not the case. Steve was totally buried in Human, unfairly so.