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Hitmonchan was on the lower end of the usage stats when it was RU. Ambipom, on the other hand, is usually in the 20-30 range, and often in the top 10 for the low ladder.
C+ --> B-/B
I've been loving using Arbok in this current metagame. The metagame trends in this post-drop meta have shifted in Arbok's favor, with Fighting types becoming more common, and Psychics like Xatu less common (they really shouldn't be, considering Sawk is the best pokemon in the tier...