You do realize that AD would have had an even smaller chance at competing on those two nights right?
On Tuesdays, the competition would be
CBS: NCIS (#7 in the rankings) or The Amazing Race
NBC: The Biggest Loser or My Name is Earl & The Office
ABC: According to Jim & Rodney or Commander in Chief (T # 8 this year)
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On Thursdays they would have been up against. . .
CBS - Survivor (T #8 this season) or CSI (the top rated show on TV)
NBC: Joey/ Will & Grace or The Apprentice
ABC: Alias or Night Stalker
And that doesn't even include the minor network shows like Everybody Hates Chris, Smallville or Everwood.