Usual snickering comments duly dismissed (they do not bring much to the debate), I have always been quite fascinated by the debate, and I think that the argument is misplaced...
Block size...
From a purely hunting perspective, one of the real questions is the size of the block. If anything is shot on a 1,000 acre plot, whether it be a guaranteed 48" sable, 58" Kudu, 48" Buffalo, or "A grade" lion, it is not much of a hunt per my personal standards...
Tracking...
Since I am not interested in participating in the shooting of a guaranteed animal, I have never shot on a 1,000 acre plot.
What I have done is hunt in various fenced (because it is a legal requirement) properties in South Africa ranging from 20,000 acres to 50,000 acres; hunt in the unfenced mountains of the Karoo; and hunt in unfenced communal lands or similar designations.
In all cases some folks do the hunting on truck, and some even shoot from the truck where legal. Regardless of whether it is fenced or unfenced, animals are wild or bred, this too is not much of a hunt per my personal standards...
I do my hunting on foot, and I cannot tell any difference between tracking bred Buffalo in 20,000 Limpopo fenced acres, bred Kudu in Eastern Cape 50,000 fenced acres, wild Kudu in Eastern Cape 200,000 unfenced acres, or wild Elephant in 1,000,000 Zimbabwe unfenced communal land acres. The reality is that a day of tracking only covers a minuscule part of any such land.
Baiting...
Wild lion hunting nowadays is often a matter of either chance encounter, most of the time while driving, in which case the hunt is often started and done in a matter of minutes and does not involve much other that shooting; and more commonly baiting, in which case, again (and without dismissing the fascinating and engrossing art of selecting a bait site and the delicious angst of sitting in a blind), it does not involve much other than shooting.
So, whether there is more hunting, or less, in tracking a lion on foot in 20,000 fenced acres, or in sitting in a bait blind in 1,000,000 unfenced acres, is an interesting question...
Animal behavior...
Since releasing a drugged lion the day before the shooting is illegal, and walking to such drugged lion to dispatch him with bow or rifle is obviously not hunting, this is not what we are discussing here.
What are the behavior differences between a lion released 30 days ago on a 20,000 acres fenced property and that has been hunting to feed himself, or a buffalo that has roamed 50,000 acres for 6 months, and their wild counterparts, I do not have enough experience to say.
What seems relatively certain based on pros and clients reports alike, is that both generally try to avoid man, and both will fight if provoked.
In summary...
Assuming that the block is of decent size (e.g. 20,000 acres and more), and that the animal has been on it long enough to behave naturally (e.g. feed and roam) on it, the quality of the hunt, and the danger of it, is in my experience a lot what the hunter makes of it.
Reading Ruark, his wild lion hunting in 1950's Kenya wilderness, involved rolling off a Land Rover driving slowly by, waiting for it to get the required legal distance away, crawling a few yards, and shooting a digesting lion. it does not seem a lot more heroic to me than tracking on foot a bred lion on 20,000 fenced acres in Limpopo...