[ttrashh]

Many window users faced Silverlight quality issues themselves due to their .Net frameworks not being up to date. For the best performance, they needed to download the .Net 4.0 SDK in Windows, which is something the average Netflix customer would not be willing to do.

Silverlight doesn't require the .Net framework on the machine. Not sure what performance issues he is talking about but Silverlight has better streaming features and performance than flash or html5.