Only 3 cities of your race, but that doesn't matter as your recruitment limit is mostly gold. Gold mine on the way to the fight helps, too, plus Dwarves don't have healers, and their cities have only 18 Influence.
But that was a fun one. Plaguebearer is probably my least loved unit
Orcs is probably the race the AI is worst at - instead of expanding on Raiders, which pay for themselves while influencing cities and are not bad at all stat-wise, it concentrates on building the second-level unit, which takes 3 turns to influence a city.