Comparison between the position and structural parameters of the lens mass and light for eacht lensing system. Top: difference between the median mass and light centroid of our models, with Δx = x_s − x_m and Ay = y_s − y_m. Bottom left: comparison between the median mass and light position angle. Bottom right: comparison between the median mass and light-axis ratio. The dashed lines show lines without a centroid offset (top) and the lines of equal position angle and axis ratio (bottom left and bottom right).