Windows Vista Security - Better than Linux?

After reading a nice article written by Jeff Jones, a security researcher for Microsoft. He says he isn’t biased, saying he worked over 75% of his career outside Microsoft, using Slackware Linux, Unix, HP Unix etc. He claims Windows Vista has less security holes than popular versions of Linux, such as Ubuntu (he also compares Red Hat, Novell, Mac OS X). First let me say why his facts are distorted, and why he knows his facts are distorted. His facts do raise an issue of slow patching of vulnerabilities across the software Industry, but Linux performs the best consistently because anyone can audit the code. Here’s why his comparisons are uneven:

He provides pretty graphs, let me provide my own:image
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(click on Graphs to Enlarge)
As you can see, Ubuntu Linux 7.04 (released April) compares comparatively better to Vista, available since January. The Graphs are provided by Secunia, an independent security research firm. Microsoft often downplays vulnerabilities other companies like Secunia find, which is also a factor that Jeff Jones did not mention (maybe he forgot?). I forget where this famous quote comes from but I have paraphrased: “You cannot depend on a man understanding a problem if his salary depends on him not understanding it”, which I think affects Mr. Jeff Jones.