The Zerg's means of reproduction came from the Hatchery's larva. The larvae were created by reorganizing genes. On the other hand, the humans' means of reproduction was through breeding clones.
This might be the reason why their souls were a bit deficient, causing them to be unable to sense the effect of [Enlightenment].
After [Enlightenment] activaed, two status panels appeared.
The first one was for the vehicle called Vulture. It was described as a normal quality vehicle capable of high-speed driving, laying mines, bombardments, and many other things. As for the other status panel, it was for the driver of the vehicle. The driver's creature rank was only a normal 1-Star. He was a lot weaker than the Marines, but his intelligence was quite high at 12 points.