LOS ANGELES (Reuters) - Pop rocker Pink scored her first Billboard 200 No. 1 on Wednesday as her sixth studio album stormed the charts, beating out new debuts from Kanye West's GOOD music rappers, The Killers and Carly Rae Jepsen. Pink's "The Truth About Love" sold 280,000 copies in its first week according to Nielsen SoundScan, making it the third-highest debut of 2012, behind Justin Bieber's "Believe" and Madonna's "MDNA." It is the singer's best-selling debut to date. ...