Bow down and hear our cry,
Our earthly rulers falter,
Our people drift and die,
The walls of gold entomb us,
The swords of scorn divide,
Take not thy thunder from us,
Take away our pride.
G.K. Chesterton: English Hymnal
New here? I'm Roha — want a quick tour?

Can you tell me about the Orc's stats?
2 Shogun
What time were the battles? Are the replays saved? It would be interesting to watch :) A replay is everything! :)
But in general, I'm not particularly surprised. A Dwarf with the right build can do amazing things. Tons of Dwarf meat is even difficult for Orcs to chew through, and runes usually get stuck in their throats :)
Although, Dwarves can be good even with a non-standard build, IMHO. I remember how my Helmar once wreaked havoc with light magic, attack, and logistics + surprise attack :) Nothing purely Dwarven was upgraded (attack and light magic still take a backseat compared to defense and chaos, but they remain a very good choice for a Dwarf, sometimes even more beneficial).
Could you tell me about the Orc build?

Of course, the ballista isn't as powerful as those of demons or barbarians, but the "Runic Machines" skill somewhat compensates for the weak ballistas of the dwarves.
But there are many other development options for the dwarves. It's not bad to focus on developing runic magic first.
I haven't played much with the Dwarves, but I have an idea. What if you take Erling with spellcasting, level up his Chaos magic, somehow learn Armageddon along with Pyrokinesis, take Jarls and Fire Priests + dragons, and bombard them with Armageddons. If you also take Battle to the Last and learn the resurrection rune. Of course, all of this is just a fantasy, but the picture in my head is terrifying.