I'm currious why the question? Are you thinking about buying some land so you can hunt muleys?
Regardless, I would have to say that it depends on where the land is. 1 acre in downtownCheyenne will not hold near as many muleys as one acre in the middle of Medicine Bow Nat'l Forrest.
Don't mean to sound smart-allicky, but my point is it really depends on where the land is. If that "200 acres" is adjoining some prime deer habitat and it has likely features like food, water, rimrock and trees, then it will at some time hold deer. 10's of 1000's of acres is nice, but very hard to hunt. (So big!). What you would find, is that in all likelyhood, most of the deer on that big a place are concentrated in those areas like water, food, rimrock, trees.
Hard one to answer. Hope this is some help.