请问用WCF开发B/S Web和Asp.net有什么不同

Question

这里 http://msdn.microsoft.com/en-us/library/bb412172.aspx 说：The Web Programming Model provides the basic framework elements required to build Web-style services with Windows Communication Foundation (WCF). Web-style services are designed to be accessed by the widest range of possible clients (including Web browsers with no additional client framework)。可见wcf也可以开发b/s web。有没有熟悉wcf的朋友介绍一下这种方式和asp.net比起来有什么优势劣势，适用范围有和不同？

谢谢