While conceding 20 more than Leeds who finished one place above us, and only two less than Birmingham who were relegated.
Clean sheets are what's needed for automatic promotion. Baz had 11 all season in 23/24, while Leicester and Ipswich both got 15. Peretz has already managed 6 in 13 games since joining.
I agree with you that there are other factors in our recent upturn in form. A settled back 4, an excellent RB in Bree, a better focal point in attack etc.. But the impact of having a better keeper who not only saves a lot more shots but commands his area, comes for crosses, shouts at and organises the back four (all things that Baz was hopeless at) cannot be underestimated.