A vulnerability was announced being exploited in the wild on a website on Dec 27th, 2005. It was quickly added to Metaploit. A 1 hour and 14 minute turnaround time is why people love Metaploit. Microsoft issused a patch on Jan 5th.
Exposure time: 10 days
The Month of Apple Bugs released a Quicktime vulnerability, MoAB #1, on January 1st, 2007.
A fixed was then released on January 23rd, 2007.
Exposure time: 23 days
Now I am not advocating one over the other, these are just simple facts. Microsoft was almost 2 and a half times faster than Apple in patching a similar bug that was in the wild and could be triggered via webbrowsers.