From one of the wiki's it says crafting stats affect: "Increases the success of synthesizing high quality items"

http://forum.square-enix.com/ffxiv/t...ter#post414562

From the link above, it says the stats... I'll copy and paste below:

For Crafter the status effects will be as following.

木工師
主道具：VIT／副道具：DEX
Carpenter
Main: VIT / Secondary: DEX
鍛冶
主道具：STR／副道具：MND
Smithing
Main: STR / Secondary: MND
甲冑
主道具：VIT／副道具：STR
Armorer
Main: VIT / Secondary: STR
彫金
主道具：DEX／副道具：INT
Gold Smithing
Main: DEX / Secondary: INT
革細工
主道具：VIT／副道具：INT
Leather
Main: VIT / Secondary: INT
裁縫
主道具：DEX／副道具：MND
Cloth craft
Main: DEX / Secondary: MND
錬金
主道具：INT／副道具：PIE
Alchemy
Main: INT / Secondary: PIE
調理
主道具：MND／副道具：PIE
Culinarian
Main: MND / Secondary: PIE


What i'm seeking is an official description of what is affected by adding these stats to the specific job with the specific tool.

I'm inclined to think it affects quality, (And not making the recipe simpler) as some have argued against me. I'm just looking for an answer if someone could help me out.