Guild Wars 2

Was wondering if someone could answer specific questions about how damage worked.

Lets say you have a sigil of force and the superior rune of strength with 1 stack of a might. You do an attack that hits for 1000 damage. Is it 1000 damage + 5% (sigil) + 7% (rune) + the might? Or is it all added together at once for +14%?

Also wondering if critical damage is calculate before or after bonuses like Sigils of Force, etc.

http://wiki.guildwars2.com/wiki/Damage