The size of pieces in a given exhibition is decided by the exhibit’s curator in relation to the other pieces to be exhibited and the space available. If you were looking at an exhibit by one artist, there were probably fewer pieces included than in the exhibit cited in the above lawsuit. Fewer pieces = more room to display larger works.
I see what you are saying & have to agree, but the reason I brought up the Church exhibition was that his paintings were the Jumbotrons of the 1800s and somehow they found room for a dozen to 20 of them. I thought they did a good job.