Those things are all advantages, sure, aside from frequent updates. What's that about?
However some of those advantages require Kinect, which then puts the price up by $100, so that means to enjoy all the advantages gives the PS4 that significant price advantage.
And PS4 has voice controls if you spend less than $100 and buy a PS Eye. So one of the advantages is no longer an advantage, and with PS4 you've still spent less money.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix