Mac's latest OS is not uniquely theirs, it is a certified Unix implementation, which along with Solaris and clones such as Linux have a vastly superior track record with regard to security and robustness.
Still want to go with that comment? Or think it's time to update it to reflect reality?
From the same article you are citing:
Secunia is not saying that Apple products are less secure than other products.
Furthermore, if you read the entire article you will also find this:
Keep in mind, by the way, that simply listing the total number of potential vulnerabilities isn't the best way to gauge the relative security or insecurity of a computer
I stand by my comments, but just to be clear, Microsoft consistently has security flaws which allow an entire computer to be completely compromised, and this is due to fatal flaws in it's architecture, which have long been correced by other operating systems, especially those with a Unix based implementation.