Ratio between the variance of the shape noise-free lensing power spectrum estimated from the cosmo-SLICS simulations and that obtained from the analytical calculations. The upper panel is for the Gaussian term only, while the lower panel shows our results for the full estimates. The lines are colour-coded as a function of w₀, ranging from magenta (w₀ ∼ −2) to blue (w₀ ∼ −0.5), with the fiducial model shown in red squares. Models with high (low) w₀ exhibit larger (smaller) ratios.