Correct- there's no identifiable scale, organization or tactics employed by the ground forces- just disjointed, mixed small units gathering and sitting at map nodes. The result is that single helicopters defeat everyone from combat jets to sinking ships to decimating armies.
Gunship! is more accurate with respect to using realistic force templates and ground units behaving with some sense of realism. This game is more in the realm of shoot em up. I personally think this detracts from the simulation aspect quite a bit, but to each his own.