Pen raised deer that have just been turned loose - I would say that's not real hunting. Still hunting, but not real hunting.

Now, if you had several thousand acres within a fence and the deer were born and raised in the woods (not a pen) then I can see it being more like real hunting.

We have 3500 acres and I really only hunt a couple hundred of it. It would make no difference at all if the borders were fenced or just posted signs.