As for magic on conan, direct damage magic is almost non existent, but an Wizard can raise an undead army for eg, can conjure demons, and shapeshift.
But yes, D&D 6e should bring more cool stuff to other classes fells superhuman at higher levels. For example, Rangers on Dragon's Dogma can do all type of cool stuff. Tenfold flurry, comet shot, crippling arrow, can use all types of arrows, blast arrow, poison arrow, even maker's finger. So IMO if the LV 20 sorc is stopping the time, the lv 20 Ranger should be with an massive bow trowing arrows at the size of Javelin that can punch walls, be poisoned, can be explosive and do all type of crazy stuff. Should be able to jump very high, and feels more like an demigod archer. Holy water arrows to use against undead sounds interesting too. Fighters, i honestly don't know how to make then powerful without making then "supernatural".
