Just like Counter Energy, I strongly believe that Counter Catcher is a card that works better in Non-GX/EX focused decks.
Counter Catcher works best when there is a 1 prize gap. This discourages people from simply popping that Alolan Vulpix when you can just immediately Counter Catcher on the next turn for a bigger KO.
But if you're playing GX vs GX and constantly focused on 2 prize KOs, then you never want to purposefully put yourself behind by 2 prizes in order to use a card. It holds the same value as Guzma as that point.
I think Counter Catcher is deck specific and should not be simply put into every deck, but when you put it in a deck that makes sense it is an absolute game changer. But even without Counter Catcher in everyone's deck, the threat of it being there highly discourages 1 prize KOs.
And as great of a single card Counter Catcher is, let's not forget that if you're simply so behind or set up so poorly that you don't even have a Pokemon to respond with even if you have Counter Catcher, then it simply doesn't matter. Regardless, this card encourages more careful & strategic play and I love it.