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

I meant situations where, let's say, the Academy and Haven factions meet – Haven defeats the Academy, and the player who played as Haven starts telling everyone how great Haven is. To really find out which faction is stronger, you need to play without artifacts and do it more than once. Only then can you say something meaningful. Otherwise, the topic is pointless.