How easy is it to port a Windows Phone 7 application to Metro on a Windows 8 tablet?

Question

I know that Metro on both platforms shares a common “look and feel” and that WinRt makes use of XAMLand C# (or VB.NET) like Silverlight does on Windows Phone 7.

Howev

Answer 1

This answer is the same for WP7 & SL.

On a scale of one to ten, it's a six or seven at best.

WinRT is just not the .Net framework, unfortunately. And that's WP7 & SL.

Having said that, if WP7 <-> W8 is a 7, WP8 <-> is a 9.9!

You will NEVER get 100%, by the way. Different form factors need different XAML, at the least.

Just remember, design with MVVM!