I saw one of those Discovery Channel type shows which claimed that Boeing had experimented with the full second deck jumbo when they designed the 747 and abandoned it because they couldn't figure out how to meet evacuation regulations.
What did Airbus do? High tech slides? Nope. They lobbied and either got their plane exempted from the regs or had the regs changed (forget which). Either way, it didn't give me a warm fuzzy...
Ok no matter what we think of the test it is industry standard. 90 seconds is 90 seconds and 873 people took 78 seconds to evac during this test. Just because Boeing could not do it............

Air Bus have not had any "regs" changed. The rules had to be written to include Extendable Length Escape System because the 380 is the only aircraft that at this time will use them.
The FAA adopted changes in its rules allow pre-deployment of slides. But passengers cannot know the location of the emergency exits to be used before the drill begins. The pre-deployment and inflation of slides allows the proper placement and opportunity for inspection of safety mats around the slide prior to the start of the demonstration. In addition, the revised rules allow low-level lighting outside a plane during an evacuation demonstration. An FAA review of 19 full-scale evacuation demonstrations between 1972 and 1991 involving 5,797 participants found that 269, or about 4.5 percent, were injured. In one of the demonstrations involving the McDonnell Douglas MD-11 with 410 passengers, a participant was seriously injured, resulting in paralysis. The FAA believes that a 4.5 percent injury rate during an emergency evacuation demonstration is not an acceptable safety practice and that was the reason for the changes.
These rules came into effect in 1993, a little bit before the A380 was about.
Matt
"A bit of a pickle" - British translation: A catastrophically bad situation with potentially fatal consequences.
PETA

People Eating Tasty Animals.
B1 (Cat C) licenced engineer, Boeing 737NG 600/700/800/900 Airbus A318/19/20/21 and Dash8 Q-400
1. Captain, if the problem is not entered into the technical logbook.........then the aircraft does not have a problem.
2. And, if you have time to write the fault on a napkin and attach to it to the yoke.........you have time to write it in the tech log....see point 1.