Shouldn't it be a bit like in Pokemon where what matters is how many Natrelmon you take out? So it still kind of depends on winning but you don't always lose, otherwise it seems one character will always be left behind as he can't ever win thus doesn't gain experience and stays in the vicious circle.
Also, don't people learn from their mistakes aswell? ;)

Sorry for so many questions but, do Natrelmon keep their Innates when they evolve? Meaning, Volentia has the bombard ability. Does Voltion aswell?
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Stream- the user may have their Stream attacks bounce to another target within 3 feet of the first point

Does that mean the when I bounce the stream attack, it travels only 3 feet?
Distances in Natrelmon are very small, a wave waterlogging an area of 0.5 feet. Thats like 15 cm, smaller than the foot of my Natrelmon.

Tidesurge - and can change direction once.
Does that mean I can just suddenly modify the attack's path to any direction, at any moment?

When Tidesurge changes direction, a sphere of water [Level/20] feet in diameter is left behind.
Is this sphere of water floating in midair passively?