I'm going to quote here some fragments of his article that I consider important to understand why so many of us love the Surface. This is what Paul says:
Initially, I thought that the lack of apps was where the Surface would really struggle. My assumption here was only half true. When you have a tablet that has a full web browser that can load anything, the need for apps greatly diminishes. Instead I just went to my favorite "Apps" on the web and pinned them to my start page. Now I get the full experience of everything, and not some slimmed down version to make it an app.
A real file system. This might be one of the most important features. iPad's inability to share files between apps is frustrating and ridiculous. With Surface if someone sends me a word document and I want to download it to a folder and access it with 10 other programs I can do it with ease! This is another place the Surface wins hands down!
A real browsing experience. I have become numb to mobile device browsers failing on all sorts of websites. So I was pleasantly surprised to discover that Surface will load every web page, no matter what (content?) it's running. A good example of this was sitting on my couch the other day watching TV. I wanted to order a pizza from Dominos (yes, I know I live in Chicago and this is a sin to like Dominos over other pizza restaurants). In the past, this site never worked on any mobile or tablet browser I have used. While I waited for my pizza I opened up Amazon EC2 and also checked the status of our server infrastructure. Finally, something that doesn't show me half the page or fails to load key functionality.