I watched a co angler set the hook on a bass years ago. As soon as he hooked the fish he said, " Oh it's a good one". He easily reeled in this fish, and the bass made one half hearted jump, never really clearing the surface. I netted this bass for him, and it weighed 7lbs 2oz. Yet, it came to the boat very easily, and didn't fight much at all. On the other hand, I've had four lb fish tear it up, thrashing around, jumping, and pulling very hard. This is all part of what makes bass fishing so much fun. Each fish is a little different, and unpredictable in the way they fight. Have you ever hooked a good size fish of say, 6lbs or more that didn't fight very hard?
