Are weight and weight capacity good indicators of a sofa's frame quality?

For example, let's say we have two sofas that are made of the same kind of hardwood. Sofa 1 is 130 pounds and has a weight capacity of 550 pounds. Sofa 2 is 160 pounds and has a weight capacity of 1000 pounds. I would think that Sofa 2 is obviously of better quality. But lets say each sofa undergoes the same wear-and-tear over a 10-year period, but that neither sofa ever has its weight capacity exceeded. Would the frame of Sofa 2 ultimately be in better shape than the frame of Sofa 1? Would there be no real difference at all?

Also, let's assume that you're not privy to how either frame was constructed, beyond being told of the weight, weight capacity, and use of hardwood. And let's say that each sofa passed your basic test of lifting one front leg to see if the opposite front leg raised at the same time (or remained on the floor, indicating poor quality).