I've found bear to be on the lower end of the spectrum of wild game, rising above aoudad and musk ox. That isn't to say it was bad, it was generally good. I just think that there are other animals that are better, much better. The texture was very fine and firm. I did not find it to be gristly or tough.
Mountain lion, however is very good and those that leave the carcass in the field are really missing out. I would put it just below antelope, elk, and whitetail.
As others have said, and I feel needs repeating, field and table care are paramount. One cannot overcome the other if there is a deficiency.