Ajax Vs Other technologies

The below link will give you the clear picture about what are all the alternatives available in the NET other than Mr.AJAX...(and also checkout google's new release based on AJAX...useful tool..)

• XUL - 25%
• XAML - 25%
• SVG - 25%
• Flash - 50%
• Applets - 75%
• Ajax - 100%

Why is Ajax getting so much attention when there are so many alternative technologies?