Black Widow is a skilled assassin who has several gadgets to make her even more formidable. A single hit from her Widow Sting can knock out many opponents. Mike Hagger is a strong foe and his durability may help him resist such an attack, but Widow still has the edge overall. In a hand to hand fight it is quite debatable, but throw in her electric nunchuks, guns, and other armaments and she definitely takes this. Not to mention that she won’t be overpowered very easily as she has the super soldier serum within her. Black Widow wins.