Guild Wars 2

either the tooltip or the stat window is wrong. quote from wiki:

Critical-hit chance has increased effectiveness when you are under the effect of fury.
  Effectiveness Increased: 100%

except when I have 30% crit chance, my stat goes from 30 to 70 instead of 80. so it seems as tho fury is doubled and not actual crit chance like the tooltip says.

it increases the effectiveness of fury by 100%, so instead of 20% it gives 40% crit chance.