Round table

There are plenty of weak points. Very weak troops (except for the horses and maybe liches in some situations). Hero speed is generally low. In short, the only chance for Necropolis is to use the advantages of certain templates and urgently acquire other people's troops somehow, because your own are useless in battle compared to the corresponding levels in other towns (with rare exceptions).

These are some very theoretical considerations, not supported by practice. Horses, liches... who needs them anyway? :)

That growth power on random is not the determining factor was proven years ago by chaos players. The determining factors are:
1) early-game breakthrough power (week 1)
2) ease of cracking Griffin Conservatory hives in weeks 1 and 2
3) ease of cracking Dragon Utopias in weeks 2 and 3
By all these points, Necropolis is among the leaders — skeletons in week 1, vampires in week 2, skeletons + vampire achievements in Dragon Utopias.

And of course:
4) speed of horses and daddy, chances for speed skills, having them from the start
Here Necropolis is in the middle.

As for weak points, perhaps only the dependence on the layout, but on 8mm6 this factor is not particularly pronounced, and the advantages are enormous. Hence 1st place.

Now, if we compare with the main pursuers, the situation is as follows:

Fortress:
1) Breakthrough power is average, it's hard to go into tough banks and strong guards. But it's quite versatile, resistant to shooter blocks, so completing main tasks is usually not too difficult
2) Much depends on whether you manage to build Hydras in the castle in week 1 and buy them out in week 2. If you succeed, Griffin Conservatories and hives fall surprisingly easily; breaking a max Griffin Conservatory purely with growth is more than realistic. However, you can manage without Hydras too, especially if you start with hives — the main hero's armor and decent melee stacks help.
3) If you manage to farm enough Wyverns, then Brogh in Dragon Utopias goes berserk, even Behemoths aren't needed
4) Brogh is the speed leader among all heroes

So this town is quite versatile, with minimal weak points, and therefore the most stable of all. It's hard to screw up with them, but mega breakouts in development are also rare. Hence 2nd place.

In my personal ranking, it takes 1st place, simply because I don't like Necropolis, and I pay more attention to stability than raw power, and the difference between 1st and 2nd here is very small — roughly comparable towns.

Conflux:
1) Breakthrough power is weak, requires skill to handle.
2) This heavily depends on the amount of gold collected. If you manage to upgrade and buy out the shooters and Psychic Elementals, there are no problems. Good unit speed in battle.
3) Here there are difficulties. Native growth works poorly for Dragon Utopias — shooters get blocked, dragons hit Psychics and Phoenixes with double power, Fire and Earth are weak and mostly go to fodder.
4) Speed is excellent — Logistics from the start on the main hero and the runners' speed boost from Pixies.

This town is not universal, has weak points, but they can be compensated by strong ones. Additional bonuses include an abundance of native dwellings, which with enough gold often allows gathering a very impressive native army. By the way, this is an example of a town with high growth power, especially in battles against an enemy, so rushing with Conflux when gold is plentiful is very profitable. However, due to the reasons mentioned above, it ends up only in 3rd place.

It's even worse with the other towns. If you're interested, I can elaborate.