That's fair enough... But it's more likely they are trying to hold off to see what Microsoft offers...
Thing is, if they were so sure of their product, they would just stick their cards flat on the table... I used to be all for playstion 1 & 2.... Thought the original Xbox was shite..... But when it came to playing both ps3 & Xbox 360 the 360 was an easy choice IMO. Controller was more comfortable... Games were cheaper... The Xbox just felt better. Then with all the Sony hacking scandal...just topped it for me. I know loads who have both but only really play Xbox.not many the other way round. The ones who say ps3 is better always quote "ps3 has a blu ray player".... But you can pick up a decent blu ray player for £60.....

I've learnt to just think that Microsoft is Xbox, developers use pc's .... Therefore will always lean towards Xbox. You just have to look how much more support most games on both platforms... Xbox always does compared to ps3. I don't know why but it is what it is.

Also it appears you could also now have to pay to go online on ps4.......so the only two things people ever say is better on ps no longer will be..
I'm pretty sure Microsoft will have a few things up their sleeve and I doubt they are worried at all on what the ps4 has to offer. Yeah, the games look good, but so will xbox. That upload share gameplay..... Is a gimmick. The only good thing is about a friend helping you out on levels if your stuck.... Although, these days there aren't many people who bother with campaigns, everyone plays online so that deems that pointless....
I'm not too keen on people watching your every move. Bit big brother for my liking. The worst thing I heard about it was that they are removing gamer tags and you will have to use your real name... Taking away all privacy....I personally think this could be the last playstation....... Sony as a whole are crippling, tv's are struggling, their losing millions, ps vita bombed bad..... So they are now trying to tell you ya need one of them to go with your new ps4......... Erm don't think so.

I do hopefully pray ps4 has something good up its sleeve like virtual reality like some of the rumours claim. I would then possibly buy one... To put next to my xbox720 lol