Mass of the largest fragment M_lf over the total mass M_tot and its dependence on the specific impact energy Q over the strength inferred from the SPH simulations of Durda et al. (2007; for the impact angle ϕ_imp = 45°; open circles) and our high-resolution simulations (filled triangles). Our values of Q for oblique impacts were corrected to Q_eff (Ševeček et al. 2017). The old (Morbidelli et al. 2009) and new parametric relations are also indicated (dashed and solid lines).