Guild Wars 2

does your illusions benefit from your power, precision, and crit rate?

I believe they profit from your power and precision, but not your crit dmg.

Another one is with toughness and vitality. Toughness counts but vitality doesn’t. So if you want to boost illusions I suggest knights gear, power, precision and toughness, all of which benefit your illusions.

http://wiki.guildwars2.com/wiki/Illusion

Illusions derive their precision, power, condition damage, critical damage, armor, and healing directly from the mesmer’s attributes.

Illusions do not gain any benefit from the mesmer’s vitality, condition duration or boon duration.

They are neither affected by the damage of the mesmer’s equipped weapon nor by any of the various non-stat effects of weapon sigils or armor runes.