Snarl/Dark pulse Mew VS. Latwins. Thoughts?

PokeBattler can do a lot of things, but it also has somewhat simplified raid rankings at https://www.pokebattler.com/raids

You can adjust raid boss, moveset, weather, and general level of attackers. It will provide rankings of attackers against those moves, and a ranking of the possible movesets for those attacking pokemon.

While I don't think it's a terrible choice, Mew's fairly unimpressive attack stat, and lack of appropriate STAB, means it's less than ideal. Probably ok for a B-Team, or perhaps an anchor for the A-Team.

Snarl/Dark Pulse Mew is among the worse movesets against Latis according to pokebattler (open the Lati page from the raids page, click open Mew in the list of counters and it shows all the movesets compared against each other). DT and SC are the best fast moves, DG, Blizzard and IB the best charge moves. Snarl/DG seems to perform alright.

Mew with the optimal movesets is comparable to Articuno, so solid tankier option. I would really not use it without the best movesets.

I'd be happy with that set. Consider that Snarl and Dark Pulse will be good against Lati@s, but also against Celebi, Jirachi, and Deoxys too.

Then again, it's going to be your only Mew and you worked hard for it. If TMs aren't an issue, make your Mew exactly how you want it.

Don't have one yet, but aren't even considering using it due to it's attack stat.