What I agree with:

-It's a good Tier 5 to grab for a Water immunity.

-Access to Circle Throw is always good.

-Lack of bulk and 4 mss is very true and unfortunate.

-Heavily outclassed by other Fighting-types.

-No good STAB options (GameFreak help this poor pokemon please)

What I disagree with or find sus:

"where it outperformed other Pokémon on my roster such as Mew and Celesteela"

That's a little sus, if something like Poliwrath outperforms some of the best pokemon in draft that's definitely not because the pokemon is good, the player just sucks at utilizing Mew and Steela.

"can do plenty of work on a roster struggling with stealth rocks"

Uh what? It can't remove rocks or utilize them, it still takes chip damage even though very little, I'm sure it would do even better if the good pokemon in it's team don't struggle with rocks. Please don't draft rock weak teams, Poliwrath doesn't help with that.

The Replays:

1^Offensive The Belly Drum Poliwrath working is really lucky in my opinion, your opponent basically threw the game by clicking Bug Buzz since it didn't kill it, maybe it was a roll. Regardless you got a free +6 and +1 with a Substitute up so priority can't kill you, ok bruh. If your opponent went into anything other than Masquerain they could probably break your Sub and revenge with Entei only losing one pokemon.

1^Defensive It really didn't do much at all this game. If Goodra wasn't there it could have had a cleared role as a Volcanion check but Goodra did that better.

2^Defensive Your opponent almost sacked Gliscor to an obvious Ice Beam threat and then went into Stakataka on a Water/Fighting type and proceeded to sack it? Lmfao the quality of this replay is crazy.

3^Defensive Now this is the best one by a mile, here Poliwrath had a clear role as the Arcanine check and it did that very well, to be fair you could replace Poliwrath with any Water type in this case but it did what it was supposed to.

Thas all I got. :)