There are numerous differences and features between the two consoles. My best advice is to just browse the different posts on the forums.
There is alot of info. Too much in fact to post here.
Welcome! I'd have to say some of the biggest difference is as follows:
- Graphics power of the system.
- Better games with more detail.
- Kinect/TV integration for hands-free flawless navigation between games, Cable TV and social media
Videos, even real time ones, can be doctored. Not to mention they don't take into account bugs that can and will appear as different apps and games are installed and added to the console. Nothing will ever be flawless when it comes to tech, and even if it were possible, its not some you can declare until many man hours of use are put in.