I downloaded Silverlight, the runtime formerly known as WPF/E, back in Feb when it was first released, and I too was disappointed that on the Mac all you got was the runtime, but then I didn't think much more about it because this is Microsoft and it is exactly the sort of thing you expect.
Speaking of Silverlight, bubblemark.com has a new 3D demo. This is in addition to all the other 2D tests I had run back in Feb, which compare Silveright to Flash/Flex. There are now some Apollo apps to run as well. The 3D Silverlight demo on my MacBook Pro was getting 9 fps, that's not a typo, and Safari is using about 105% of my two cores. The Apollo 2D demo was getting 93 fps using 60% of my two cores. I didn't shutdown anything to run my tests, including Parallels.