Microsoft's new windows 8 ad : Comparing the uncomparables

Microsoft in its new ad deems iPad as a non-productive device only good for playing piano. No powerpoint support, no multitasking as its down points. But are these two things anytime comparable. Most buyers of iPad know its limited functionality. The ad is a good take on iPad but the Microsoft has to blossom from inside and provide a better platform rather than comparing the uncomparables.