User blog comment:Makbloo/Patch 3.7 thoughts/@comment-4743916-20130516031644

I think the nerfs were fine.

Zed was still too strong in a coordinated setting because he guarantee kills 1 target and a lot of AoE damage to the rest of the enemy team.

Zac does too much damage for his role and he brings way more CC than most people would anticipate from a jungler, especially with his ultimate, so nerfing the tenacity prevents him from getting free access to the backline the way he does now.

Caitlyn had the nerf coming. Same with Twisted Fate.

Diana is still too strong with her waveclear so the nerf to her cleave rather than the nerf to her Q was smart. The shield "nerf" is kind of weird because if she's taking in a high volume of damage, she's going to use up both parts of the shield anyways so this was really a nerf, not a buff.