American Idol season 7 Top 2 Performance Show: Is it David Cook or David Archuleta?

After this last performance, Who will win the season 7 of the American Idol?

DAVID COOK
U2 - “I Still Haven’t Found What I’m Looking For”

Emily Shackelton - “Dream Big” (Watch here)
Collective Soul - “The World I Know” (Watch here)

DAVID ARCHULETA
Elton John - “Don’t Let The Sun Go Down On Me”

Ryan Gillmor - “In This Moment” (Watch here)
John Lennon - “Imagine” [Reprise] (Watch here)