The most important thing in a war against a human is the endgame!
I defeated an opponent with an army that was almost twice as large!
Regarding leadership – I disagree! It has never happened that it wasn't given; sometimes it wasn't given immediately, but it always appeared. The main thing is to determine from the very beginning what and how to upgrade!
With the right tactics, you always have money!
Added 9 minutes later
Hmm... you don't always find the right artifacts in the shop, and they cost money (not a small amount), and how long do you have to wait for them to be updated. By the way, you can get initiative rings with 20+20... and it's almost impossible to collect the Dragon set using only one shop.
And the enemy can also accumulate good artifacts. Well, not exactly the same, but using other methods.
I have never collected all the Dragon artifacts, but the main thing is not to collect them as a set, but to collect 5 – all parameters increase by 4 + the dragons become a serious weapon!