I just encountered an egg vendor and decided to browse him just 2 C what he was in possession of and distributing and saw Ryker......

Ryker's AA bonus includes %20 damage but it has "stacking" in parenthesis next to it.......

Does this mean that %20 damage stacks with other gear % damage bonuses, Awakening % damage bonus, temp buff % damage (elixirs, other pet AAs, other player skill temp buffs, ETC.)????????