re: African Cape Buffalo bull vs Alaskan Brown bear.....

The gold miners in the 1800s use to get all kinds of exotic animals bright in and would fight them against each other in a pit. Brian bear destroyed silverbacks, lions, tigers, polar bears and everything else they put it up against.

Now that was an enclosed space and it would depend on environment, but I'm general brown bear is the baddest animal in the planet. Would pick polar bear in the ice and snow though.

Surprisingly lions beat tigers much of the time.