Tizen vs iOS

Tizen is an open and flexible operating system built from the ground up to address the needs of all stakeholders of the mobile and connected device ecosystem, including device manufacturers, mobile operators, application developers and independent software vendors (ISVs). Tizen is developed by a community of developers, under open source governance, and is open to all members who wish to participate.
iOS is a mobile operating system developed and distributed by Apple. Runs on iPod Touch, iPhone and iPad. Authorized third-party native applications are available through Apple's App Store.
Face to face in the news:

2011 - iPad 2 adds video chat to defeate Tizen

iPad video chat
Probably no one has been really surprised that the iPad 2, launched today, has a camera (even two) and now this tablet can be used for video calling and video conferencing. By default it provides video chat Facetime that still works only via Wi-Fi. In general, this story with the camera, that was not included in the first version of the device in order to better sell the second, has shown Apple's ignorance of business users, for whom video chat could be the most important function of the tablet. And in confirmation of this, Apple almost hasn't add any business-oriented features to iPad 2 and the new operating system iOS 4.3 that it comes with.

We note only better JavaScript support in Safari browser that will result in better web-application performance, and HDMI-output that potentially can be used to show presentations from iPad via a projector. True, for now the HDMI-projectors are still a rarity (they usually have only a VGA input). Unfortunately the new iPad has no SD-slot. Probably it will be the killer-feature of the third version.

Steve Jobs
But the main iPad's business feature is still the reputation factor. If you come to a business meeting with iPad 2, then all your business partners will certainly want to make business with you. Because it's so cool: white, 33% thinner and 15% lighter than the original iPad and has a fantastic smart cover.

In the first half of this year we expect the launch of new tablets from Samsung, HP and Blackberry that promise to be much more business-oriented.