Why not go Warrior over Runeglaive on Eve?

It may just be because Runeglaive was overnerfed and/or Warrior being OP, but I swear AD Eve with Warrior is significantly stronger than AP Eve with Runeglaive at the moment.

Last game, I built . I was definitley doing more damage than an AP Eve would, and the is a solid replacement for Rylai's permaslow AND Runeglaive's sheen affect. I went with a typical AP Eve jungle mastery page: 12/18 with thunderlord's. Maybe if I went for an AD Eve page it would've turned out even better.

But, let's take a look at her ability's scalings. Runeglaive offers 40 AP, 10% CDR, and 250 mana. Warrior offers 60 AD and 10% CDR

Hate Spike scales off 55% AP at max rank, and 70% AD at max rank. With RG she gains 22 damage, and on Warrior she gains 42 damage, almost double, and the gap is more apparent considering Hate Spike has 1 .5 second cooldown.

On Ravage, RG gives 40 damage, and Warrior gives 60, 20 damage more.

So, Warrior offers significantly more damage on Eve's abilities, 20 More AD than Runeglaive's AP, at the exchange of 250 mana and the sheen proc. That might seem even, but also keep in mind Eve is doing 60 more damage on her autoattacks, and you can get another sheen item since Eve is good with ALL sheen items anyways.

Yet, I still see people INSIST on going Runeglaive over Warrior, all the time on Eve. Why?