Each level of Evade skill your class possesses represents a base 5% to avoid any blow in combat from the forward arc. The advanced evade available to many hybrid tanks is simply evade in a 360 degree arc.

Evade is modified by Quickness but is undiminished by anything your opponent can do.

Levels of Dodger adds 3% to the evade % and this skill is hard capped at 50%.

Usefulness of Evade in RvR is excellent.