In your opinion, which faction is the strongest in Heroes 5? Let's discuss the advantages and disadvantages of each faction.

Yes, that’s right. Each faction has its own advantages. You just need to learn to find those advantages, and everything will be fine. Choose 2-3 factions and learn to play as them, instead of complaining every time you lose that the balance is off (like when I was getting beaten playing as the Mages – it’s a painful memory, but I was the one to blame, not the balance). As for patches, I think they’ve already polished the balance quite well. And patch 3.1 doesn’t seem to be coming out anytime soon, which means the Orcs are at least not overpowered.