Arthas as a DK already sacked the city, killed the most powerful mages and destroyed the wards...
How powerful is Azshara exactly? Do you know of anything she's done that can be measured? Probably not, just some claims from a book that is full of none canonical assumptions.Archimonde is -HUGE-, he has more magic prowess than Azshara ( and that's quite a bit ) and in my opinion he's stronger than Kil'jaeden ( who basically created the LK/Arthas ), because Archimonde was the muscle while Kil'jaeden was the brain.
I do agree he's more powerful than KJ, something ive argued on here for years, but what has KJ done that can be measured aswell??
You don't know how the artifact works then. KJ didn't impart any power onto the Helm, he turned the most powerful mortal shaman into a necromantic item, that in turn grew in power with every soul that joined the Scourge.Then there's also the fact that Frostmourne and Ner'zhul got their power from Kil'jaeden and there's no way in hell a minion can beat the master, that's like Sylvanas beating the Lich King 1v1, just not happening. Ner'zhul had but a glimmer of KJ's power.
And to just outright destroy this whole argument, blizzard went ahead and made Ulthalesh and saidThere are few things in creation that Sargeras fears. The Deadwind Harvester, Ulthalesh, is one of them. The necrolyte Sataiel regrets that she did not attempt to slay the fallen titan with it when she had the chance, so she will test whoever dares to wield the weapon in her stead. Ulthalesh does not mind. The scythe's master will either overcome Sataiel or be consumed, which will only make the blade more powerful. And then another bearer will take their place. And another.
His size means nothing, the Lich King has created larger constructs and raised larger creatures. Archimonde also can't summon endless waves of demons. Raising demons is still up to debate, but it doesn't matter cause Archimonde needs to get those demons to him to make any use of, where Arthas and LeiShen can make an army on any world they go to.When Archimonde is hundreds of meters tall what will 1000 skeletons that can't even reach his toes ( well, he has hooves, but still ) do?
That's not to mention Archimonde himself is one of the strongest warlocks in lore, being able to summon endless waves of demons. Arthas can't raise demons and the demon count is basically infinite.
Final note, Archimonde is living. Not only do the living tire, which the dead do not, they are very susceptible to plagues.