Despite the differences of absolute modulus, the modulus ratio of the M to I layers was consistent with a value of about 1.8, independent of probe radius. One-way ANOVA among I/M ratios obtained with three different probes did not show a statistically significant difference in the 95% confidence interval. We note, however, that the I/M ratios obtained from DMA measurements were statistically different from those obtained by AFM measurements. We attribute this difference to unknown experimental bias between DMA and AFM measurements, possibly involving the influence of probe adhesion, remaining viscoelasticity at AFM imaging conditions, or flaws in the DMA master curve.