I actually think I saved that battle, I had to work today so I haven't been able to finish my matches off and I'm too tired now, so I think you were my last battle. It probably was the best battle I had out of the 30 to be fair, either I was slaughtered by high ranking players or I slaughtered the lower ones.
Here's my team:
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Hitmontop was one that I had bred for doubles so it wasn't bulky enough for my liking. It came in handy against other teams using Whimsicott though. My main problem was fast flying types that pretty much took it out instantly.
Garchomp was not that great, yes it did take out some pokemon but it just wasn't enough to tank hits or knock out pokemon, it only really came in handy for Heatrans and Volcaronas, half of the time the Heatrans just critted it too and took it out unfortunately whilst behind a sub.
Whimsicott came in handy a lot, sunny day to just counteract rain teams initially (which I think I went straight for against SpearMKW), moon blast just took out every Hydriegon in sight and was great paired up with Hitmontop using quick guard and taunt against other Whimsicotts.
Arcanine was very bulky and managed to rack up some KO's and burned some serious threats, it seemed to be the main focus for a lot of my opponents. The only problem was rain teams, the passho berry could only just keep it alive for one water attack in the rain but that was it.
Rotom Mow was a great counter against Rotom Wash and could do some serious damage against Milotic which my team hated because of the two intimidaters. The bulk also helped it survive many Ice Beams for Ludicolo/Politoed/Kingdra. Heatran and Volcarona were the only things it really feared.
Lapras was one of my favourites to use, a lot of the time it was on the same side as Kingras that used Muddy Water, which meant it was alive for a very long time, Ice Shard was always unexpected from opponents which caught their Landoruses off guard. Also Snarl from Arcanine and Icy wind was always a great combo. It didn't really have many problems except for the fact that I didn't breed Freeze Dry on it :(
My team basically hated Ludicolo and I had to literally get it out of the way as fast as possible.