Using SVG, you can generate the graphics on the client side using javascript (or on the server side using any language).
The sparklines are cleaner and since they are vector will print better. (Tutfe proposed sparklines for high-resolution interfaces like paper, screens really don't do sparklines justice)
jesse_132,
While SVG has the advantages you claim, there are two things to consider:
1. In order to view SVG I need to install a plug-in. As the adoption of SVG grows this may become less of a problem, but it should be taken into consideration.
2. I did address the print vs. web usage of sparklines in the article. With respect to getting higher fidelity when you print using SVG, when is the last time you printed out a web page to read it?
some desktop browsers that do SVG and some that very soon will: Opera, Konqueror, Mozilla, Safari
plug-in: as lots of people already have SVG because it came with Acrobat Reader, we might have this again and more widespread with a PDF+Flash+SVG plug-in
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