Platinum Multi Tower Record - 72
Garchomp @ Choice Band
252 Att / 252 Speed / 4 Hp
Metagross @ Occa Berry
252 Att / 172 Hp / 84 Speed
So yea, I just mainly did this because I knew I could eventually get first here. Basically Garchomp would either outrage or earthquake based on the better opening move, and if I were against two ice types or something like weavile I would switch to metagross. Dragon Claw was only there so I knew I could hit dragons and not rely on the 50% outrage (if I didn't hit the dragon then it would almost surely kill me). Rock Slide is mainly filler but is the best option against 4x weak rock types.
Metagross is the same I use for almost all facilities, occa berry because I remember losing on a previous streak to a fire type, but ironically the only time occa was activated was in my loss, and in that battle it didn't matter since metagross was weak enough for the occa berry to be useless.
Here's how the 73rd battle went...
Garchomp and Metagross + Raikou and Aerodactyl vs.
Abomasnow and Charizard + Latios and Steelix
Raikou used Light Screen
Garchomp used Dragon Claw
Abomasnow used Blizzard
A Critical Hit!
Garchomp fainted! (I did the calcs, and even with my imperfect HP iv, due to the light screen that was up, Garchomp had a 100% chance of surviving even with the hail, taking a maximum of 92% from the blizzard.)
Raikou used Thunderbolt
Metagross used Meteor Mash
Steelix used Earthquake
I wanted to get rid of Abomasnow, but I kind of knew this would happen.
Aerodactyl used Rock Slide
It hit steelix but missed charizard -_-
Charizard used flare blitz
And from there, it was aerodactyl vs. charizard and a steelix. He got rid of charizard next turn, but without earthquake, aero stood no chance.
So I got:
72 wins in the platinum multi tower
74 wins in the platinum singles arcade
323 wins in the platinum doubles tower