Discussion of level 1 monsters.

Here, you could argue: a centaur would significantly reduce the health of a berserker before he even reaches him. And in general, if you're going to have such a "competition," you should compare not one-on-one, but based on the weekly growth rate. That's where you'll find out who wins. In this scenario, the fairies have a good chance of winning!

Fairies, growth rate 23. Berserkers, growth rate 19.
Losses: 6 berserkers and 23 fairies.)))
P.S. I don't know why, but berserkers always go first against fairies. The fairy doesn't have time to fly away. :)

Centaur, growth rate 9. Berserker, growth rate 19.
Losses: 8 berserkers and 9 centaurs.)))
1 centaur takes out 1 berserker.(((
P.S.2 Good thing they're in the same castle.))

I tested Archers against Centaurs. In both cases (one-on-one and based on growth rate), the Archers lost without magic support.)))