Too many variables to make a solid statement like, which is best.
I grew up on wild game in northern, bush Saskatchewan. The meat I ate came from a very knowledgable meat hunter, who knew how to spot a good meat animal before he shot, and how to take care of it from then on.
We had delicous meat. If you have never eaten a dry cow elk, shot in September in a cold country and well taken care of, you just don't know how good game can be!
Yes, I mentioned a cold country, because that is of vital importance. In a cold country, with short summers and long winters, the game takes on a tremendous amount of fat in a short while. With moose, especially, the steaks will be mottled right through with fat, just like the choice beef steaks they tell us we shouldn't eat!
The moose of northern BC, the Yukon, and I suppose, Alaska, are absolutely choice. While, in many peoples opinion, including mine, the moose, a different sub specie, from the Kootenays of southern BC, are not good to eat.
I have had choice elk from Alberta and Saskatchewan. I was once talking to a person with a lot of wild meat experience. He talked about the great elk of northern Alberta. I asked him how he liked the elk in the Kootenays. His answer was short and simple. "They are not fit to eat."
I have really only touched on the subject of the taste of wild meat.
As I said, so many variables.