Agi do anything for tanks?

[holsteinrx7]

Hey guys, I swear I can feel a huge difference with agi, ESP below 90 and again when I hit 130. Is this a total placebo? My ogre sk is around 78-88 agi and I'm wondering if having more agi would help me get hit less often and maybe for less. Agi seems like a fairly mysterious stat. And I do believe there may be some tests that show it makes less than a few percent difference, but I'd like to hear some opinions.