Cadbury UK - 2009 Superbowl Ad

SuperBowl Ads have an allure that attracts a wide audience of consumers, and even those that don't watch the SuperBowl seem to have a common liking for their ads. However, what I'm wondering is if SuperBowl ads that are placed on Youtube have a larger viewing than its airtime during the SuperBowl? Take this cadbury ad for example, its weird, awkward yet still had 3 million watches over a period of 3 months!