Riots new stat changes are an Illusion of choice.
So here is the deal (Insert math)
Level 1 Morde Vs level 1 Xearth
0 bonuses MR 32 Xearth Q 80 (80+.75ap) Damage taken = 60.6
6 MR and 10 AP MR 38 Xearth Q 87.5 (80+.75*10) Damage taken = 63.4
For a set of stats that are supposed to be "Quasi equal" MR is losing the war. For me to take the same damage that a Xearth Q would deal with the bonus 10 AP I would need roughly 12 MR
10 ap costs 217.5g 12 MR costs 216g
So... yea... damage is still being favored, and we are removing bone plating, which also increases general game damage...
You can't viably get defenses out of the runes anymore, Riot knows this and so they force you to take 1 defense stat so that the players that would otherwise just pick 3 offensive stats don't 100% win by gold efficiency alone. If I could choose 30 ap (651 gold) or 18 MR (324 gold) I would always take 30 ap and then just build in game early defense. Literally a kill worth of gold.
Here is the gold value of the shit they are trying to give us 5 armor = 100g 6 MR = 108g 6 ad = 210g 10 ap = 217g 15hp = 39g 90hp=234g 9% AS = 225g
Clear bias for damage. Defense needs to be similar gold value.
So Next season when not picking your mandatory defense rune remember 1 offence rune gives you a 100g advantage and a damage advantage over the enemy.