Can someone calculate the efficiency of tank items after those "nerfs"

I put quotes on nerfs because not entirely sure. Some people already have spreadsheets of info of items and their gold worth so doing it would be easier. despite being cheaper than offensive items tank items in general are much less stat efficient. and thats why a tank sitting on 6 tank items can't even properly tank damage late game unless you have a GA to stall with it.

I fear for those changes. more so for champions that build them that will not have any changes.