Marginalised and conditional optimistic 1σ uncertainties on the cosmological parameters, relative to their corresponding fiducial values (in percent units), in both the G and GS cases for WL, GCph, and the 3×2pt. We highlight the logarithmic scale on the x-axis, made necessary by the large range of values. The values in these plots have been used to compute the ratios in Tables 1 and 2.