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Meditite - Medicham. I think they are stealing Gallade's uniqueness because they share his type combination (even though they existed first) but Medicham is awful in comparison. And I could be wrong about this, but players have plenty of other Medicham substitutes of both Psychic and Fighting, whereas Gallade actually executes both types brilliantly so you can use him for both.
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I'd have to disagree with you there. Medicham may not be as powerful as Gallade, but at least Medicham isn't a glorified stick figure. And Gallade may have Psychic and Fighting type coverage, but there are still better monsters to use for both types.