Histograms showing the Bayes factor for all the pairs of halo models used in this study. The red columns show the number of galaxies that display a very strong positive evidence towards the first model, i.e. which have −10³ < Δ log(𝒵) < −20. The two lighter red columns depict the number of galaxies that show strong positive evidence and positive evidence for the first model, i.e. which have −20 < Δ log(𝒵) < −6 and −6 < Δ log(𝒵) < −2, respectively. The blue columns show the number of galaxies that show very strong positive evidence for the second model, i.e. 20 < Δ log(𝒵) < 10³, while the lighter blue columns display the number of systems that show strong positive evidence and positive evidence for the second model, namely 6 < Δ log(𝒵) < 20 and 2 < Δ log(𝒵) < 6, respectively. The grey columns display the number of galaxies for which both models perform similarly, having −2 < Δ log(𝒵) < 2. In each panel, model 1 refers to the first model listed in the title, while model 2 refers to the second model.