Who is weaker Macbeth or Lady Macbeth?

I believe Macbeth is the weaker of the two. Macbeth allowed his wife to take control of him and push him into killing the king. This basically got the ball rolling leading into more people dying and more death coming. Macbeth was pretty much the puppet and Lady Macbeth the string master. All in all Macbeth is weaker because if he had a backbone then he would have stepped up and told his wife. no.