Silverlight vs Flash

This game got famous today on digg.com. It`s a really nice flash game which requires logic. Loved the game but..when I read a MS blog I got to another Silverlight sample game. If you take a closer look at things you can see that the concept of the game is the same. I wonder how much time was needed to create the game in Flash and Silverlight. Until we find that out..enjoy the games.