Oli, you're being fooled! Don't what those words on the box say, unless Dyson has one of every vacuum cleaner model manufactured in history, Dyson can't prove his claim! It's like saying ClorTide has twice the power of any other detergent, dispite that ClorTide has not tested their detergent on every other detergent.
Keep in mind, ALL cyclonic vacuums 'fluff' dirt. This means that the cyclonic action of the cleaner 'enlarges' dust and hair especially. The next time you empty the Dyson, dump it onto a flat surface. If possible, vacuum up the waste with a bagged cleaner. You'll notice that sane volume of dirt just got smaller than it was in the Dyson! 
