She placed the focus of her set squarely on showcasing her voice ... she sang live for the nearly two-hour show, a rarity in today's pop music—and the legendary complex footwork that marked her.. as pop royalty." Aidin Vaziri of the "San Francisco Chronicle" declared the show affirmed "her legacy as pop royalty", saying, "Jackson threw her body full force into the songs." In reviewing her performance in London, Neil McCormick of "The Daily Telegraph" praised Jackson's "retained vocal tone and physical fitness" as "impressive", also saying "her voice still high, soft and girlish, her body curvy but firm and up to the demands of aerobic workout style dance routines." Joanna Chaundy of "The Independent" wrote, "Watching Janet Jackson play such a prestigious venue, one that conveys a sense of intimacy despite its size, is a pleasure in itself." Alexis Petridis of "The Guardian" said, "Jackson can still sing and dance up a storm", concluding "if she wanted to remind people how commanding a presence she can be, she's done her job." The tour's entire box office earnings were not publicly reported, including sales from Europe, Australia, Asia, and its second North American leg. Selected reported dates of the tour's first North American leg from March to April 2011 had ranked forty-fifth in Pollstar's Top 50 Worldwide Tours, earning $16 million. "Billboard" ranked it fourth among the year's "Hottest Tours." Jackson was announced to be the fastest-selling single artist concert of the year. The majority of the tour had completely sold out, including three dates in New York, Chicago, and London, multiple shows in Los Angeles, Toronto, Sydney, Washington, D.C. and Atlantic City, as well as single dates in Berlin, Atlanta, Seattle, Santa Barbara, and various others. Jackson also played three sold out shows at London's Royal Albert Hall. Two shows in Sydney, Australia sold out within fifteen minutes, and Los Angeles had sold in under ten minutes. Upon the tour's announcement, Jackson became the second most-searched item on the internet on multiple search engines. Ninety-six percent of the tour's pre-sale tickets were sold within the first day. The tour achieved several attendance records, including breaking the gross for a single performance at a venue in Tampa, Florida, surpassing a record previously held by Mariah Carey. The tour's show at the Reliant Stadium in Houston, Texas was the twentieth most attended concert in the venue's history, being two thousand away from the venue's highest attendance record at the time.