I feel like zombies are way stronger than plants

So here's the thing, I only play plant, mostly chompzilla and spudow, and I struggle so much with zombies, especially that disgusting card that transforms all zombies into other zombies that cost 5 or more, when someone play that thing, I just know it's over. And it doesn't matter how strong you were in the game, the zombotron just explode all of my plants and I lose. I'm rank 20, and almost every single opponent I play has this crappy card man, it's awful. Like wtf zombies are just way too op, also I feel like the zombie decks are much stronger, they have deadly, bonus attacks, tricks, lots and lots of cards that conjure other cards, dinosaurs, octopuses, helicopters, crackheads, soldiers, silver surfers, monkeys pirates, BLACK HOLES, and my best card is a potato mine, how can I compete. And for me, this reflects the waiting time to play, if a play plant, I find a match in 5 seconds or so, when I play zombie, usually takes 30 seconds or more