It's doubtful that nature surpasses order in magic, as it doesn't even have spells to dispel magic.

Mynos, please read my message more carefully (it seems to be on page 3). I was talking about the fact that nature surpasses order not in magic, but in the strength of the castle. The arguments are above (in the same message). And the topic here is "The strongest castle in HOMM4".
P.S. in terms of magic, they are almost equal to me. Although I prefer Order.

And about the bear cubs: What prevents the city lord from doing that? And increasing their strength?!

Who is the city lord? I'm a bit slow... Is it the governor? If so, then a Barbarian should still develop magic. This means that strength without magic is not that strong.