At Level 70:

All Classes Ratings

1 Weapon skill = 3.9 Weapon Skill Rating
1% Chance to hit = 15.8 Hit rating
1% Physical crit = 22.1 Critical strike rating
1% Haste = 10.51 Haste rating

1% Spell hit = 12.6 Spell hit rating
1% Spell crit = 22.1 Spell Crit rating
1% Spell Haste = 15.8 Haste rating

1 Defense skill = 2.4 Defense Skill Rating
1% Dodge = 18.9 Dodge rating
1% Parry = 31.5 Parry rating
1% Chance to block = 7.9 Block chance rating

1% Resilience = 39.4 Resilience rating = 1% less chance to be crit, 2% less critical strike damage

Stat effect on ratings:

Warrior

1% crit = 33.33 Agility --- Confirmed
1% dodge = 30 Agility --- Confirmed

Rogue

1% crit = 40 agility --- Confirmed
1% dodge = 20 agility --- Unconfirmed

Shaman

1% crit = 33 Agility --- Unconfirmed
1% dodge = 30 Agility --- Unconfirmed
1% spell crit = 76.4 Intellect --- Unconfirmed

Priest

1% spell crit = 80 Intellect --- Confirmed

Druid

1% crit = 25 agility --- Confirmed
1% dodge = 14.73 agility --- Confirmed
1% spell crit = 79.97 Intellect --- Confirmed

Mage

1% spell crit = 78.5 Intellect --- Confirmed

Warlock

1% spell crit = 83.33 Intellect --- Confirmed

Hunter

1% crit = 40 Agility --- Confirmed
1% dodge = 25 Agility --- Confirmed

Paladin

1% crit = 33 Agility --- Unconfirmed
1% dodge = 30 Agility --- Unconfirmed
1% spell crit = x Intellect

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Rogue 1% crit = 45.7 agility
Rogue 1% dodge = 14.08 agility

Don't forget to add resilience ratings, though I am unsure of the values in game. Wowwiki states 39.4 Resilience per 1% crit reduction, and 2% crit damage reduction

Druids:
1% crit = 25 agility
1% dodge = 14.71% agility

Ive heard several reports of 1% crit = 40agi
and 1% dodge = 14agi is lvl 60ish, its most likely about 20agi per dodge.

Wow! Is this really the druid formulas at 70? That is insanely low. There is almost no point in druids getting any gear with ratings on it when straight stats are so beneficial. It seems that they will be in the same place that hunters were, pre mechanic changes, where the value of agility was so high it made crit chance and straight AP gear worthless (of course druids will want to stack str as well). This works well with the "of the beast" type items, and it will also work extremely well with "survival of the fittest".

I am wondering if any raid class feral druids will comment, but would formulas this generous mean that druids will scale better with gear than any other melee dps class? Or is the lack of weapon scaling still enough of a limit?

Yeah, my mistake, the ~14agi to dodge is for 60.

The 45.7 agility was adjusted from 14 crit rating being ~29 agility, then adjusting it to 22.1 crit rating (1% crit at 70) = 45.7 agility. But I don't think anyone has really figured it out in real world, or at least posted it anywhere.

Pf would know more than anyone.

Good job Vindicta

Might be nice to include which stats provide how much AP for the physical classes too. Hunters get 1 RAP per AGI, 0 from STR, 1 MAP from each of AGI and STR.

wowwiki is up to date on this information:
http://www.wowwiki.com/Formulas:Attack_Power

http://www.wowwiki.com/Formulas:Ranged_Attack_Power

RAP and MAP values gained from stats haven't changed from lvl 60 to lvl 70 as far as I know, so I'm sure everyone knows what their values are for their classes :)