Question

Why is Mienshao in Gen 9 NatDex RU?

Answer 1

The most obvious reason is because Mienshao doesn't get enough usage in NatDex UU. However, there are reasons why Mienshao isn't used in NatDex UU.

On paper, Mienshao seems like it would be good in NatDex UU. Having a great ability in Regenerator, having access to Knock Off, and coverage moves such as Stone Edge, Poison Jab, and Blaze Kick. However, there are things that that make this Martial Arts Pokemon not good as it was in Gen 8 NatDex UU.

1. Pokemon who can tank Mienshao's attacks: Pokemon such as Clefable, Buzzwole, Slowbro, Enamorus, Mega Latias, etc can switch into Close Combat. Even though Mienshao can use Knock Off on them to cripple them, some Pokemon such as Clefable, Buzzwole, Mega Latias, and Slowbro don't mind switching into a Knock Off.

2. Pokemon outclass Mienshao:
Because Pokemon can tank Mienshao's attacks, it would have to be a Pokemon who spams U-turn. However, as an offensive pivot, Cinderace outclasses it despite not having access to Regenerator. As a Fighting-type, Mienshao is outclassed by other Fighting-types such as Buzzwole, Iron Hands, and Galarian Zapdos. Buzzwole and Iron Hands have a secondary type that helps them check opposing Pokemon. Galarian Zapdos, despite being slower than Mienshao, has a secondary type of being a Flying-type to hit Pokemon who resist its Fighting STAB.

TL;DR Mienshao is in NatDex RU since it doesn't get much (if any) usage in NatDex UU since Pokemon such as Clefable, Slowbro, Mega Latios, and Buzzwole can switch into its moves. Mienshao is also outclassed as an offensive pivot and a Fighting-type since the Fighting-types that are used have secondary typing that helps them be offensive or defensive.

Hope this helps.

Answer 2

Alright, lets see here.
Its no question why mienshao isnt in OU. if you want a fighting type, you got mega lopunny and medi, urshifu rapid, tusk, I can go on forever. mienshao's 125 atk isn't "bad", it just feels wholly outclassed by like every other fighting type in ou.

uu feels more of a mystery bc I never played gen9 nduu yet, but I can give a few guesses based on previous experience in gen8 nduu. from what I can tell in the gen9 nduu Pokemon list, I can see celesteela, aegislash, scizor, skeledirge, and multiple other mons that would seem popular and hard counter mienshao. Mienshao is also relatively outclassed by quaquaval, buzzwole, and rubl hawlucha. The former two are just better Pokemon, while hawlucha packs higher speed than mienshao, which quack and buzz lack. The megas in the tier also don't match up well. Mienshao's only way of successfully taking down mega bee is with multiple fake outs, and it cannot touch mega venesaur. Mienshao's only tool against mega gard is poison jab, and while it does ohko, poison jab restricts mienshao's moves even more by forcing on something that cannot touch the steels and ghost of the tier. While mega ttar is also in the tier, I have no idea whether people use it or not. In conclusion, it gets bodied by multiple mons, and is outclassed by multiple mons. Simple as that.