May 14, 2008 - It's a foregone conclusion, is it not?  The David Archuleta/David Cook finale has always been there on the horizon, ever since the American Idol Top 12 was named.  The frustrating part, as it has been all season, is that there were always other deserving singers.  Brooke White, Jason Castro, Michael Johns, Carly Smithson – all, at times, had rightful claims to become a top 2 American Idol…