Sir Pseudonymous wrote:
At first, I would assume Orks to outnumber humanity, but on thinking about it that seems fairly unlikely. Humans stack themselves in several mile high hives that cover the greater parts of planets, and have advanced agricultural systems and logistics to support them. Orks at their densest have ramshackle shanty towns the size of modern cities. Their population growth far exceeds that of humanity, but that's accompanied by significant culling at their own and other hands. I don't think it would be far wrong to assume that an Ork world wouldn't greatly exceed the population of modern Earth, and it's quite doubtful that they have even as many worlds as the Imperium does Hiveworlds, even though small populations can also be found on many human worlds.
I would think, based on what you have estimated concerning human population estimates, that humanity occupies a smaller, denser portion of the galaxy that orks would. On the other hand, I would think Orks a spread over a vaster area of the galaxy, and as far as we know, into the next. I recall some reference somewhere that mentions a Mars tech-priest sent out a probe into space to discover the extent of life outside the known galaxy. After centuries (or even millennia, I forgot), the probes findings finally got sent back and all they found was the back-chatterings of Ork communication, which suggests that even in the darkest, unknown reaches of space, where mankind hasnt even set foot on, there are Orks. Hell, it's probably an Ork Empire the size of the Imperium, and the only reason why they havent invaded (like the nids) is because they're embroiled in their own fighting (as orks are wont to do).
Still, an interesting thought. I will watch this thread with great interest.