Варкрафт / Warcraft

Absolutely Stormwind COULD have defeated the Orcs solo. I will not switch to Azeroth because it was much bigger then Stormwind and was more powerful. You see If you look at the force the Kingdom of Azeroth have to bear Everything below Buringing steepes and everything above Stranglethorn vale belonged to them.

They had a HUGE army. In fact the army they kept for peace time would be considered in Lordearon an Army used for war time.

Now let me give you a play by play. The Orcs used a blitzkerig attacked on the human forces and go the outer lying area razed. Then they decided the resistance they faced was TOO weak and felt that they should jsut strike at Stormwind Captial, kill their king and sack their castle. Easy victory right?

A combine army of Fifty Thousand (WC1 game book) of Orges, Orcs, Wolf riders, warlocks Assaulted Stormwind Keep directly.

To give you a sense of Stormwind Scaled, in the novel Wolfheart, the Combine Alliance lost 50k soldiers and considered it a huge lost.

The Orcs assaualted STormwind Keep not knowing that the harden infantry of Azeroth and Her knights COMBINE with the Brotherhood of the Horse , Stormwind elite fight force, counter attack and simply TORE THE CRAP out of the Orcs forces.

For the first time since their inception they face a foe that pretty much punched them in their mouth. They were high on demon blood and got punched in the mouth so hard they ran, they ran were cut down until the forces of Azeroth was too tired to pursued.

The Horde nearly broke right there and Gul'dan in an effort to buy time for the Horde because the army of Azeroth was assembling sent Garona as a peace envoy.

Medivh who was Sageras at the time convince Llane to accept the Orcs peace offer and give them a small settlement in what is now known as Stonard.

So Stormwind Army Moblization stopped, and king Llane entranced by Garona and with his best friend vouching for her he stayed his hand and not lead the hammer that would have shattered the orc clan.

You see Medivh needed time to go and assassinate ALL of the powerful Arch mage of Azeroth (The Last Guardian source) and King Llane seeing how articulate and courteous Garona was gave the ORcs a reprieve and land hoping they can work together and mutual understanding and harmony.

It was all a ruse of course because the Orcs need to build a second army bigger , much much bigger and they need to keep the Kingdom of Azeroth from mobilizing before their final sucker punch with Medivh betrayal it was too late for Azeroth to mobilize and fight effectively. They experience a shortage of man power but give Llane credit. He pulled all his fighting men back and sent the civilian north. He sent Envoys to Lordearon and we knew they would have came to Azeroth aide. Which would have broken the second Horde army AgAIN and pretty much break the Horde spirit.

So what happen? They used his best friend and had her assassinate him with his back turned to her.

So TLDR?

1. Azeroth was prevent from moblizing

2. Azeroth was prevented from turtling.

Both would have lead to Horde defeat in Canon Lore.

However, what if Stormwind had decided to say "Screw this!" and not given the Orcs a reprieve?

Well with a fully mobilized army of humans back by the archmages of Azeroth + clerics of northshire and the elite fighthing force of the brotherhood. They would have pushed them ALL the way to the opening of the portal and build a barricade like what we see in game now and kill the orcs as they come through until the orcs quit.

Fact.