Bears are no different than any other predator. If you know the right places to strike at the right times you can easily kill just about anything whether it be lions, snakes, or anything else out there. Its all about having the right timing and right moves. Think of it as being like a raid boss. If you know what to do at the right time you can easily bring the boss down repeatedly. If you don't know squat than your chances of success are minimal at best.