User blog comment:Emptylord/Season 3 - PBE Patch Notes/@comment-5045559-20121118071051

Thanks for adding the friend notes, and good job for all the work you've put into this. As a side note it would be easier it that was a page that other people could edit to help you out (i would have added friend notes) but i guess if it's that way, must be for a good reason.

Anyways, i have uncovered the truth behind "more expensive resistances" in this patch (stated to be 10-20% by Riot, and in this page), now you need to add the number for Penetrations, to make the whole thing relevant.

And that's where Riot failed: that number is 25%. Check out Void Staff, Sorc shoes, Haunting Guise. Same cost, 25% less penetration. Runes: all penetrations nerfed, resistances unchanged. Masteries: both reduced equally, except there's new additional resistance masteries.

Resistances are actually stronger now.