Fully wrong, it's quite easy to finish any battle with full rage and mana, boring but easy anyway, but that doesn't make the mage superior to warrior, the reverse is still true.
For the time we don't see it in a same way, for me it's a base element of the game, it's not a matter of high challenge but in the basic game. If not it's quite easy to just wait for mana restore, boring but easy anyway, so if time doesn't count just wait and you get full mana, that's that simple. If it count you end to restore mana at end of battle and that's tedious and worse.
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