Original sentence: Buildings are planned that would clearly surpass the Sears Tower in all height categories.For financial reasons, Sears moved its corporate headquarters out of its namesake building in 1993.In side by side comparisons the Sears Tower still looks the tallest however, and the measurement rules are controversial.New owners purchased the tower in March 2004 and are rumored to have plans to rename the building.The Sears Tower is the tallest office building in the United States and it retains the world record when measuring the height from the sidewalk level of the main entrance to the top of antenna.When completed, the Freedom Tower in New York City may exceed the Sears Tower through its structural, but not occupied peak
Edited sentence: Buildings are in the works that will soundly surpass the Sears in all height categories, but whether the Taipei or (especially) the Petronas actually earned the title in the interim is controversial.In a financial decision, Sears moved its corporate headquarters out of its namesake building in 1993.In side by side comparisons the Sears Tower still looks the tallest however, and until measurement rules catch up with the reality of design features, the controversy will continue.New owners purchased the tower in March 2004 and are rumored to intend to rename the building.The Sears Tower is the tallest office building in the United States (although the Freedom Tower in New York City may exceed the Sears Tower through its structural, but not occupied, peak by 2008) and it retains the world record when measuring the height from the sidewalk level of the main entrance to the top of antenna