That makes the ratio of malware to installed base roughly the same, lending credcence to the observation that there’s less of it written for the Macs because there are fewer of them.
WHAT!? What statistical universe are living in? 18 Mac malware to 50,000,000 installed OSX Macs. V. 2,000,000 Windows malware to 1,600,000,000 installed Windows PCs.
That's 1 : 2,777,777 vs. 1 : 800 !!!
They aren't even in the same order of magnitude by FIVE orders.