Everyone loses guzma, but some decks suffer more, this one possibly the most, if you are up against mew because espurr is your big hitter and mew stops it completely. I just threw together a ninetales version of the deck, and sadly realized there won't be a 60 hp salandit which hurts the synergy with elm/comm that cats is going to have to run. It surprisingly worked fairly well, but I had no room to increase damage output over the default 60 that litten hits, which is the other problem the deck has (even meowstic only hits 70)
The best caturday I've seen so far is zapcats shown off here:
(I'm the "kanga rewster" who suggested the idea.) Zappy hits 80 so a single shrine tick puts 270 HP tag teams in range of espurr KOs. Instead of ninetales, you could play volkner to search your limited lightning energy and grab a second custom catcher at the right moment to nail that mew. Of course zapdos and jirachi are both comm-only targets, so it might not be viable post rotation and I don't have the cards to test it. Plus you'd need suicune on a u-turn board, another comm or fan club target, to force the tag team back to the bench with no ropes and no guzmas.