A good read from The Verge. Some highlights:
"The PlayStation 4, while perhaps a more conventional product, appears to beat the Xbox One in just about every area that counts."
"The most obvious place to start is its $399 price. We already knew that the PS4 edged the One on power, so for Sony to undercut Microsoft by a full $100 at launch is a shocking and impressive move for the Japanese giant."
" It was easy to imagine that Sony, which had been suspiciously quiet on the subject since Microsoft'scontroversial restrictions came to light, was planning to implement similar policies on the PS4. Now it appears the news was held back to inflict maximum damage on Microsoft: Jack Tretton was positively beaming when he announced that the PS4 would be free of used game limitations or mandatory online authentication."
"Even the physical design of Sony's hardware is more impressive. Despite the slight edge in horsepower, Sony has delivered a sleeker, smaller console than Microsoft; the two use similar design language, but the PS4's modern twist leaves the bulky Xbox One looking uncomfortably like a VCR. Sony's failure to show the PS4 hardware at its February event was baffling, but it turned out to be worth the wait."
And the mandatory used game instructions video:
http://www.theverge.com/2013/6/11/4418070/ps4-vs-xbox-one-e3-2013