So, this week's rivalry is between two Water-types. Gyarados was introduced in Generation I, while Milotic debuted in Generation III specifically as a counterpart to it.
Both Pokemon evolve from laughably weak fish. Both are Water-types, while one is found in almost every water route available (via it's pre-evolved form, fishing, or both) the other is regarded as one of the rarest Pokemon in-game. Both are counterparts to their pre-evolution in certain key aspects (Magikarp is weak, Gyarados is powerful; Feebas is ugly, Milotic is beautiful)
So, on one corner, we have the Kanto native. He's been in every regional dex so far and evolves from the pathetically weak Magikarp, the more offensive one, Gyarados
On the other corner, we have the Hoenn Pokemon. She's impossibly hard to find in her pre-evolved form, the hideous looking Feebas, it's the more defensive of the two, Milotic
So, which of these powerful Water types do you prefer?
Which one is more useful?
Which one would win in a battle between the two?