Biggest advantage to using ASP.Net MVC vs web forms

Answer 1

I can see the only two advantages for smaller sites being: 6) RESTful urls that enables SEO. 7) No ViewState and PostBack events (and greater performance in general)

Testing for small sites is not an issue, neither are the design advantages when a site is coded properly anyway, MVC in many ways obfuscates and makes changes harder to make. I'm still deciding whether these advantages are worth it.

I can clearly see the advantage of MVC in larger multi-developer sites.