We are referring to the same contest. The vulnerabilities are reported to the vendors AFTER the contest.
Safari, based on the open source WebKit, seems to be a serious problem. I hope all the other companies using WebKit wake up. Of course, ASLR and DEP didn’t help IE 8 from letting a hack either. Everybody needs to look to Chrome, which was never compromised.
Chrome really wasn't attempted to be hacked though. I believe they were a late attender to the festivities.
Charlie Miller has said he had a list of 25 hacks (or something like that) and has enouraged Apple to take security seriously or he will continue to win that contest with those 25 hacks releasing one per year.
So while the hack is announced to apple after he told them BEFORE hand that he has 25 exploits and has had them for a long while.