Alchemy is different!
We split the page into logical parts like headlines, paragraphs, images, etc. The only thing we store in the database is text, ids of images and richtext content. Nothing else. No markup (besides basic text formatting inside the richtext elements), no styling, no layout. Pure content! This gives the webdeveloper the power and flexibility to implement any kind of layout with the insurance that the content manager is not able to break up the layout.