Exclusivity of the Prophecy

[gelite67]

No: HPFGUIDX 128210

"And either must die at the hand of the other for neither can live 
while the other survives."

If Harry is the one with the power to vanquish the Dark Lord, does this 
necessarily mean that only Harry can kill Voldemort?  Does this mean 
that only Voldemort can kill Harry?  

Could it simply mean that Voldemort will hound Harry until Harry kills 
Voldemort or vice versa?

It doesn't seem that Voldemort believes that only Harry can kill him. 
In OOP, at the MOM, he asked, "You do not seek to kill me, Dumbledore?" 
but he still used a shield to deflect DD's spell.

Angie