if the width of an html document is greater than the pdf page width the html contents is scaled down to fit the pdf page width. In such case the setPdfScalingFactor(n) method has no effect for n>1.0.
The width of your web page is set to 816px but there are several elements in the page that go over the right margin and which extend the width.
For instance img#sketch-8014. It is a 771x132 uncropped image which extends the html page width to 1321 pixels. That's why setPdfScalingFactor() does not work you and why your web page is shrunk in the generated pdf.
Here is the mentioned image: http://joolist.com/demo/zino/ajax/files/Capture12.png
. There are other elements you should fix, for instance divs that contain "new text".