Mercs have great big guns, but poor defenses to back 'em up. That's where the differences end. As with its RTS forefathers, Dominion uses game pieces that are similar for each race. Now, don't get the impression that Dominion is no fun at all. Gameplay is familiar.
Most missions involve building one base while attacking another.
The player will also have to keep track of power plants and colonies, which provide civilian support. Of course, that race will immediately have the upper hand, so it's an uphill battle. That makes for slow missions, because units are expensive for most races and resources are accumulate slowly. There's no chance here to build a base, but reinforcements do arrive on a regular basis. Aside from the opening movie, cutscenes serve more to introduce each mission.