Guild Wars 2

Is there any food like the superior sharping stones, but for toughness, so gain toughness equal to 6% of power and gain toughness qeual to 4% of your vit?

There are no Potion buffs that provide Vitality/Toughness. All we have at the moment are Power, Preicsion, Condition damage, and Healing Power (Healing power being new, from Ice Cream)

There is however, food which gives flat bonuses to Vit/Tough. Check out This Page