Correlation between weight and "quality" build

My thought is, can be yes or no.

Same floor plan and size trailer, same features and one is 2000pds heavier, either they are more honest with their weights or they are using thicker frames and real ply wood which to me is better quality.

Now if the person who is putting the lipstick on them is the same, fit and finish may still be lacking.

Just my two cents.