The Nokia 808 PureView is the best picture-taking smartphone in the market (well, to be fair the Lumia 920 isn't in the market yet).
One of the distinctive features of the Lumia 920's PureView is the ability to take well lit and clear photos in low light situations.
So when it came up against the Nokia 808, I already knew who I was betting my money on to win this one. The Nokia 808 is no doubt the perfect cameraphone, but in this department (low light situations), it's brother from the same mother (Nokia) knocked it out.
There is also a demo of the awesome video stabilization the Lumia 920 performs
So situation would the Nokia808 easily beat the Lumia920?