Standing side by side, an iPhone 6 and a Lumia 830 talk through their personal assistants: Siri and Cortana, respectively.
The conversation, loaded with Microsoft pins, shows functions that Cortana can do that Siri does not do, answering only that it has "been larger". Among the functionality of Cortana, reminders are highlighted to a particular person when calling and displaying the traffic and arrival time to the destination on the map.
The description of the video is also funny, provoking Apple competitor.

Maybe what you need is not a bigger phone, but a more personal assistant.
Cortana, Lumia 830, does more than Siri. How to warn you that you have to leave early for a traffic commitment. Cortana may even remember things based on what she speaks or writes. Ready to meet your new personal assistant? Learn more on http://www.microsoft.com/phone

iPhone 6 and Lumia 830 were released this year, but Lumia is considered an accessible "High-end", not iPhone 6. The price difference is great and we can notice Microsoft's message that users only buy iPhone by status and not because it's better.