Amazing how everything that goes wrong with Apple's products or software is somehow always limited in scope. "In very rare cases...", blah blah blah. In this instance does Apple have actual evidence the distribution of the exploit was limited to just a few websites? Did they crawl the entire web to establish that? Did they also consider the possibility the exploit could exist in other forms/packaging that a simple search wouldn't uncover?
The fact of the matter is that this was a major exploit in terms of the potential security compromised by it, and that it could be executed passively by simply visiting a website. The fact the exploit may or may not have been actively being used on a mass scale is immaterial other than for PR damage control. Instead of worrying so much about how the exploit is being perceived maybe Apple could instead describe how it was allowed to happen and go unnoticed for years and what steps they plan to take to audit their code to help assure that such exploits wont be discovered in the future.