You can see that throughout 2009 the term Burj Khalifa wasn't used once, and as there was last minute delays and press speculation at the end of 2009, the interest in "Burj Dubai" increased.
And, on a different scale and on a timeline of 1 month you can see the Burj Khalifa rebrand taking effect, but that the novelty of the story rapidly wanes.
A year on what, do we see? The rebrand has worked, but there is remnant of the Burj Dubai brand.
That said, the impact is clear in the UAE. if you just consider searches from the UAE, the rebrand was fully effective. Literally no searches on the term Burj Dubai relative to Burj Khalifa.
However, the real test is when the global audience are drawn in through the news. When Tom Cruise came in to film for Mission Impossible 4, the media were all mixed up. You need only search for Tom Cruise Burj Dubai to see. The next test is on Monday, when according to The National, The French Spiderman, Alain Robert will climb the Burj...khalifa
With all the data available - would you rebrand Burj Khalifa Burj Dubai? - or has the name worked out? The building is here to stay but what about the brand? And how long will it take to really rebrand Burj Dubai Burj Khalifa?