Duel map for Heroes of Might and Magic III.

But here you are definitely wrong; angels from positions 2, 4, 6 reach the sharpshooters.

on non-native ground they don't reach, but I remembered that it's on grass and with 13 speed the angels do reach if positioned correctly.

on this map by week 2 we have 11 vampire lords (clearly not enough for Castle), which kill griffins without losses on the approach to the conservatory. The hero can quite manage to visit the guild and have Stone Skin, Shield, Bloodlust

You've probably studied this map poorly, so you think that way.
First of all, vampires with a castle in the first week on this map is something out of science fiction. And in the guild, the esteemed Kolbasser has banned the appearance of spells like "haste" and "slow" :). Horses with a castle are only built by week 2 through inhuman efforts (sometimes wood and ore need to be traded at the market to build them).

With at least one of the spells, 11 vampires take a regular conservatory 2 without losses

Well, that's understandable, but even if you manage to build 11 vampires (impossible on this map by week 2), the conservatory might turn out to be a triple, and then it's either a loss or sacrificing some hero that you'd hate to lose, because money is also scarce.

The main thing is that the griffins don't have morale on every step

One morale and that's it, because there are no artifacts for defense or attack in this area of the map.
And it's not a fact that you'll be playing Necropolis. Try playing each faction and finding the optimal strategy for each :rolleyes:
Actually, on this map by week 2 it's unrealistic to break through with any Castle :D . I got carried away. I meant week 3 ;) On the first week when playing as Castle, I only managed to build knights with a Stronghold.

Yes, on week 3 in reality it's not taken, only by myth, but by week 3 everything will be fine, you can wait, grabbing dwellings, mines, the dwarf hut, the crypt, and killing everyone at the respawn.

I wouldn't dare to tackle a triple conservatory on grass on this map even by the third week — better to try to break through the sharpshooters. Morale is a bad thing, because it's online and it could cost you the game.

There shouldn't be such perfect balance

this map is for an online tournament, which is exactly where balance is needed.

Here's a handcrafted map for you

I looked at the map for literally 3 minutes, and it's not even close to suitable for an online pair tournament. Yes, it might be interesting for a walkthrough, but not for sparring matches.