weight an size: Grizzly bear

an adult male grizzly is the largest of the three predators that I have chosen.  weighing in at average of 180-360 kilograms (400-790 lbs) an average length/hieght (when standing on hind legs) of 198 centimeters (6.5ft), (when on all  fours) a shoulder hieght of 102 centimeters (3.35ft).  the largest of my three predators i expect it to be the winner when it comes to strenght A.K.A bite force. I was expecting it to be the slowest of the three but my research shows that the grizzly would be able to keep pace with a timber wolf. though i have have not found a definite answer my guess is that the grizzly's speed has to do with the muscles in its legs due to a high protien diet.  and even though it is not the slowest i think the grizzly will have trouble changing velocity due to its size and weight A.K.A mass.