When you think about it, they really aren't.
HP Level:
Wrath: 130
Kingdra: 130
Attacks:
Wrath: Vanilla 60 damage for 1 fighting energy, FP problem negated by Mantine. 2nd attack, vanilla 90 for 3 (gets around mime)
Kingdra: 40 damage for 1 water energy, required 2 discard to hit 60, plus 20 snipe. Free Upstream like attack for water only energy.
Retreat:
Wrath: Can have and requires free retreat. 2 Normal.
Kingdra: 1 retreat, un-needed. But can have.
Any additional things:
Kingdra: Can snipe, but has a hard time dealing with Mime. No resistance, weak to lightning.
Wrath: Cannot snipe, can guerilla and play with Politoed. No resistance, weak to lightning.
Both decks also tech typical claydol. Both have 60 damaging attacks that can't go through mime, and Wrath is plain out faster, longer. Watch that it will become the black horse of this format and win a few BR's.
woah man why are you bashing yugioh players and calling us netdeckers
Because yugioh players have a tendency to talk trash about better games.