BATTLE LEADER: Leadership. When Wonder Woman uses it, after resolutions you may roll a d6 for each other friendly character with the Bombshells or Soldier keywords within 4 squares and line of fire. If Wonder Woman has 2 action tokens, you may also roll for her. 6: Remove all action tokens from that character and it modifies its attack +1 until your next turn.

Does the initial leadership get the plus 1 bonus to stats or only the special one?

Only the after resolutions roll grants the bonus to attack.