Well I have to agree with FreeWFrank. Lots of those so called Mac flaws are for programs that are not Part of the OS.
Plus the so called $10,000 contest was a flaw in the Airport driver, in which apple worked with broadcom and produced a firmware update within a few weeks..
I see there are QuickTime flaws listed, so Lets add in the flaws for Windows Media Player since its bundled with windows.
In the end The core of Mac OS (UNIX) is secure just like linux, but its the software that you run on the OS that has the security flaws. The same holds true for Windows and any other OS.