Siberian Tiger is far better hunter than North American grizzly bear.
Both grizzly bear and Siberian tiger paw swipes are equally powerful but tiger is more technical than grizzly.
Siberian tiger canine teeth are longer and thicker than grizzly bear.
Grizzly bear is slightly heavier, longer and taller than Siberian tiger.
Siberian tiger once use to kill brown bear for its food in Russia when there was the lack of natural prey.
Both are solitary hunters but Siberian tiger use to take down large prey and predators than North American Grizzly bear.
In Russia, Siberian tiger alone once killed a pack of 3 wolves at a time which I think grizzly can’t do.
Siberian tigers are well known for killing Asiatic black bears for its diet and according to stats black bears constitute 8 % of their diet.
It is very difficult to find grip on grizzly bear neck and other sensitive body parts because grizzly bear is full of fat which protects him from internal injury.
No doubt that both Grizzly bear and Siberian tiger are fiercer hunter and fighter, it is interesting to see who is going to win the battle because both hunters can stand on their hind legs and can maul with both front paws simultaneously.
I think Siberian Tiger has more advantage over grizzly bear, as tiger is quicker, faster, cleverer, and intelligent than grizzly. Tiger also possesses strong muscular body and forelimbs than grizzly in fact tiger has one of the strongest muscular body than any other carnivora predator.