The "winner" of the next console war will be whoever is ready for the upgrade to 4k. So far all the news is that the PS4 will be and the next Xbox won't be.
You still need a 4k screen. 4k on my 1080p tv will look just that. That won't determine the winner. Blu Ray won the disc format war but it didn't determine the winner. Lots of people had hdtv's when the last gen launched, hardly nobody has a 4k tv.
This new generation of consoles favour Sony in comparison to last. PS3 launched a year later than xbox360, even more than a year in Europe. Sony had a shit approach to helping developers at the beggining of the ps3's life, plus the price, plus an inferior online network. All that will not be present in this new generation. There gonna launch at a more competitive price, they won't let MS get a jump on them, not by a year. They've improved there online network massively. They've also gone down a more familiar route in hardware, akin to a pc like 360 was so there won't be massive differences in programming and we should get similar experiences across both consoles. Both are going AMD gpu and processor. You can still argue either console as a preference but Sony won't be hindered as much like last gen. Plus they do have far superior first party development studios.