Pairwise comparison of selected performance measures. Scatter plots of 840 pairs were produced in R and show basal systemic antigen level (top), basal effector level (middle), and sensitivity (bottom) in the reference (x-axis) versus the same value in the associated alternative (y-axis) for all equivalence levels. The dashed diagonal line corresponds to the null condition where the reference and the alternative are equal. The reference is preferred over the alternative when more pairs fall above the diagonal. System sensitivity shows a clear preference for the reference with all cases preferring the reference under full equivalence.