What the stats mean

Power

Damage and healing, on everything you do: attacks, spells, bleeds and burns, heals, and the shields you put on friends (their size grows the same way). Up to 20 points, each point is +1%. Past 20, the points over it count less and less: x of them count as x ÷ (1 + x ÷ 95), with no wall, so more points always give more. 50 Power is +43%, 100 is +63%.

Grit

Max health. Up to 20 points, each point is +1%. Past 20, the points over it count less and less: x of them count as x ÷ (1 + x ÷ 112), with no wall, so more points always give more. 50 Grit on a level-10 Guardian is 522 health instead of 363. For a Guardian, its blows also grow 1% for every 1% of health its Grit gives.

Armour

Less damage from every enemy blow, added to your class's own armour. Its first 20% of armour takes 2 points for each 1%, whatever your class has of its own. Past that each point counts for less: 90% as much up to 25%, 80% up to 30%, 70% up to 35%, 60% up to 40% and 50% past 40%. Armour never goes past 60%, your class's own included: a Guardian reaches it at 64 points of Armour, a Rogue or a Hunter at 135 and a Shaman, a Cleric or a Firebrand at 155. A blow of 100 does 100 × (1 − your armour). For a Guardian, its blows also grow 1% for every 1% of armour its Armour gives, past the cap too.

Edge

Your chance to crit, added to your class's own. Its first 10% of crit chance takes 7 points for each 1%, whatever your class has of its own. Past that each point counts for less: 90% as much up to 15%, 80% up to 20%, 70% up to 25%, 60% up to 30% and 50% past 30%. A critical hit does 2× the damage (some talents raise that). Only you and your crew crit; enemies never do.

Every 1% of crit chance past 30%: a Rogue's crits on bosses and elites hit 2% harder for each (Cold Blood). Past 35%, each 1% more also adds 1.6% to their Dagger Storm's cleave (35% of the blow, up to 139% at 100%). Every 1% past 20%: a Hunter's Heavy Shot, Quickdraw and Storm Net crits 4% harder (Steady Aim). In Bellows, one and a half times a Firebrand's chance to crit becomes extra damage.

Tempo

Haste. Its first 10% of haste takes 3.4 points for each 1%. Past that each point counts for less: 90% as much up to 15%, 80% up to 20%, 70% up to 25%, 60% up to 30% and 50% past 30%. Haste makes you fight faster:

• the auto-attack swings sooner (a 1.0 s swing at 40 Tempo comes every 0.9 s);
• wind-ups and cast bars are shorter, and so is the pause after a swing or a cast;
• channels run faster, ticks and all;
• the global cooldown is shorter (never under 0.75 s).

It does not shorten a power's own cooldown, and it doesn't make you run faster. Haste from powers and brews multiplies with it: the Shaman's Spring Tide (+30%), the Hunter's Dead Eye (+50%), the Firebrand's Bellows (+25%), a Storm Draught (+15%).