I'm not sure where OP is going with this. Other than attempting to try to create a groundswell of support so that he can be "right" about something and feel some type of vindication.
The link provided by lsvv was in fact durng the pre rollout patch of 2.0. Did the pre rollout patch have new resistance stats in it? Also at the bottom of your original post, shortly after you posted it, is a video in vanilla before patch 2.0 of holy spells being partially resisted. it's in French, but you can see it happening.
https://report.nostalrius.org/plugins/tracker/?aid=1294Your original difficulty was stated as "should not be resisted by anything." However there is clearly something wrong with resistances from all the other evidence listed there.
If you want to help, would you go ahead and help already. Although at this point I don't think you've endeared yourself to the team. If you just want to drum up a shitstorm to get a feel-good out of it, keep doing what you are doing.