Comparison between fitted parameters results of mock images created with either isothermal (dashed green) or composite radial mass profiles (plain red). The mock lensing mass models display both ellipticity changes and twists based on the hydro-simulated morphologies using EAGLE galaxies from Mukherjee et al. (2018). Only θ_E = 1″ lensing galaxies are displayed for the isothermal cases in order to match the Einstein radius of the composite mock images samples. Only fits with resulting χ² <  1.5 are considered. Due to the χ² cut, the displayed distributions of ellipticity gradient and twists are slightly different.