Warmaisach
The warrior's growth path seem to primitive to me. To get stronger, it's not just about training but intentionally destroying their body parts, organs and bone system. And they also probably dont have a good meditation system to better absorb mana. Why wouldn't everyone else go for mage path? Even the magic warrior is essentially still classed as mage as they will still depend on magic. The god complains everyone wants to become a mage whereas he didnt make other classes balanced. Though, at the final realm, a warrior might have the concept of 'cut anything' but I still dont see how that will be on par with a peak mage or psychic. Even if they can move faster, that doesnt mean a powerful mind cant react fast enough, a mage with high mental capabilities will see through their speed and react fast enough by either teleporting away or casting spells fast enough (if they can without hand signs). They dont necessarily have to have a body that can react fast, all they need is their mind power. The same can go the opposite way, if a mages mind can get so powerful but doesnt increase its processing speed, then, there shouldn't be any mage left that can combat a warrior from 4th realm + as they will die before they know they were hit