“From Wild Animal Fight Club...”
I think the WAFC is thinking a little wishfully here. Bears would have no problem facing a tiger, in that the bear can stand erect and pivot on its hind legs to match the cat’s moves.
One swipe of its massive paw in a downward blow with those razor sharp 5” claws, and its all over for the tiger.
Polar bear wins against the Tiger.
Tiger claws are much sharper and retract to maintain sharpness, strengthened by large and tough tendons to take the weight acting on the claw.
The tiger’s agility in three dimensions will have made quick work of the bear’s physical integrity, bleeding it to death if the tiger didn’t swipe the bear’s jugular yet.