But a man can be woman's headache :) Seriously, it is very poetic "she was his only weaknezzz" bud doesn't work this way in real life. Any of the partners can be destructive for other's psychics or, at least, time. By the way, it is most common scenario, unfortunately.

A women can be many different things to a man. It depends on the man and on the woman. Women can be men's weakness, strength or destruction. Sometimes, they are all combined in one. 

Firstly, some women can be as strong as men physically and they can be even stronger emotionally. They can do as much as a man and, sometimes, their ability to  sympathise and look in depth into a certain situation can also make them stronger than most men. And, regarding the "Adam and Eve" statement, everyone needs a rough-draft before perfection. ;D

It depends on a woman... and man. I gather "strength" means beneficial relationships

it depends ....