Actually, Moody was banned because it was uncompetitive, not because it was overpowered or because there existed more than one Pokemon with it.
One of Smogon's frameworks for tiering is to make the metagame as competitive as feasibly possible, which essentially boils down to facilitating an environment in which a worse player does not have access to strategies which allow them to beat a better player through luck. This is why Double Team and Minimize are banned.
Moody is uncompetitive because it is incredibly luck-based. Using Moody requires almost no skill and amounts to hoping you get Evasion boosts in order to eventually luck your way to victory. This aspect of the game was deemed uncompetitive and counterproductive to a healthy metagame by Smogon, which is why it was banned.
One of Smogon's frameworks for tiering is to make the metagame as competitive as feasibly possible, which essentially boils down to facilitating an environment in which a worse player does not have access to strategies which allow them to beat a better player through luck. This is why Double Team and Minimize are banned.
Moody is uncompetitive because it is incredibly luck-based. Using Moody requires almost no skill and amounts to hoping you get Evasion boosts in order to eventually luck your way to victory. This aspect of the game was deemed uncompetitive and counterproductive to a healthy metagame by Smogon, which is why it was banned.
