Are you sure it was from purebreed stock? I heard real bison has a strongh gamey taste and kinda tough while those that are interbreed with angus cows have a smoother taste. I'm willing to say it was a mixed breed. Just my opinion.
Probably so but I don't care if it was Great Dane, it was delicious.
It dpends on the age of the critter as well as the preparation of the meat. Some bison can be quite tender and flavourful.