Stating the obvious here, but not a surprise the Evo is as fast or nearly even loading flash pages. While not officially listed, the A4 iPad chip is likely at the same speed as the Evo, while the Evo has double the ram. I would expect similar results with overall speed for tasks to toto the Evo since it has multitasking.
I still use my iPad to surf as I don't seem to find myself needing or missing flash content and the screen size for me makes it much nicer than panning and zooming around a page. Same reason I no longer used the iPhone for surfing sites. Both are great devices, and the Evo as a 4G hotspot makes a very cool set of devices.