哪个是Asp.net MVC控制器VS之间的最佳性能。 Wcf for Silverlight应用程序？

I found that Asp.net Mvc controller can serve both Asp.net Mvc View and Silverlight application via DynamicActionResult(It can be Simple Action Result or Json Action Result depend on request type). So, I have 3 options for creating middle-tier for Silverlight application.I found that Asp.net Mvc controller can serve b