I emailed Scott Guthrie, an MVC expert. He was kind enough to reply:
"Different customers look for different programming approaches, and a lot love WebForms and think it is great. Others love MVC and think it is great. That is why we are investing in both. "
So, to me this says that its not a technical issue. Its more of a "soft issue", if you will. One of personal preference. This is in line what several of you have said.
Thanks for all the answers.