The Microsoft anti-Siri ads

Is this really wise given that they just made the deal to have Bing as the default search provider for Siri? Or maybe Apple knows Windows 8 tablets are zero threat to the iPad and Microsoft threw a bunch of cash for the Siri/Bing thing and are laughing all the way to the bank. I just know Steve Jobs would have taken it personally. Tim Cook seems to be all about the money.