Humans fish generally for an entirely different purpose than brown bears. Humans make a day of it, derive pleasure out of it, and if they get only 1-2 fish to take home to fry later, they're content - all after perhaps an entire day of fishing. Not so for the brown bears - they fish for food, they for to fatten up for the tough months ahead, they fish for survival. It's quick, efficient, and action packed!
Got to love it when you get the chance to witness their skill, power, and dedication. Kind of funny to watch humans and bears fish side by side - for the contrasts of style and purpose that they bring to the river.