Good thing XB1 will probably only be $500 for a fairly short portion of its overall lifespan. 

They seem be selling at a fairly good clip at $500 regardless. 

Simple, the markets in which PlayStation is strongest have a later generation cycle than what we'd traditionally think of as the core markets. In the USA, Canada, UK, Australia, France, Germany last gen has been on the decline for a long time and in most of those markets (France and Germany being the exceptions) Xbox is a stronger brand so has seen more of a decline. Most of the current PS3 sales are coming from Latin America, Spain, Italy, Eastern Europe, Middle East and Asia - regions that peak 2-3 years later than everywhere else. This is why PS2 was still selling decents amounts every year until recently despite being dead in the "main" markets.

This is actually another point entirely and if Nintendo / MS can get a decent presence in these markets where Sony has always enjoyed a strong foothold then they have a real chance to make ground this gen.

I thought I'd re-post this from another thread as I hope it will lend some perspective to things in reply to "PS4 already has this generation won":

Nobody is denying that the PS4 is winning at the moment. The point is that you have no idea what will happen next year, the year after and so on. At least one platform should hit 100m units this generation - that is still at least 95m units to go for all three and a lot can happen in the meantime.

PS4 has a lot of hype and saw a record-breaking launch (although not that far ahead of Xbox One) but it is a marathon not a sprint. If Xbox gets more must-have exclusives in the next few years then it has every chance of pulling ahead. If Nintendo can get their act in gear and market Wii U like they marketed the original Wii then sales could pick up considerably. Nintendo sold more than 50m Wii units on the back of Wii Sports and Wii Fit alone - a couple of enormous mega-hits that cross over into the mainstream media like that could easily swing the fortunes of one platform or another.

If you look at the USA graph above (which I will re-post below):

Years 2-4 Wii dominated and years 5-8 Xbox 360 dominated. Why? Motion controls / Kinect. Xbox wasn't too far ahead of PS3 until year 5 then with the release of Kinect (and opening up the platform to the enormous casual market - lower price obviously helped here) then Xbox was able to gain a whole new segment of the market that had previously been with Nintendo.

I'm afraid they key to mega success in this industry is the casual market - hardcore gamers will only get you 2-5 million sales fora game . The mega-hits all cross over into the casual audience (GTA, COD, FIFA, Madden, NBA, Wii Sports, Wii Fit etc) - you only have to look at more than 50 million people PER DAY (100m per month) that play Candy Crush to know how enormous this audience is. Nintendo captured a segment of that in 2006 to 2009 with Wii, Microsoft did the same (to a lesser but still significant extent) in 2010 - 2012 with Kinect (and cheap bundles) and in 2012 - 2013 that market has moved very much to tablets with Candy Crush, Clash of Clans and so on.

The winner this generation will be whoever can lure that audience back to their platform most effectively over the next 3-4 years (which is clearly what Nintendo attempted with the Wii U tablet but has yet to really make work). The hardcore gaming audience is only enough to get you maybe 50m units sold - to go beyond that you will need something extra - the first to come up with that will be the "winner".

This generation hasn't even started yet.

If you look at the USA graph above (which I will re-post below)

This generation hasn't even started yet.

What can the XBONE do that the PS4 can't? The big things at the moment are suspend/resume, snapping, and TV in. Are casuals going to really want to spend $40 more just for those features and Kinect tracking when the PS4 is better in every other way? Also suspend/resume is coming and snapping would be very possible to port to PS4. If you are correct about casuals really valuing those features, Sony can implement all of them very quickly except HDMI in.

Why not a world wide graph or a european one ? why is this gens outcome all dependednt on info from one marlet ?

Hasent started yet nearly over for one of them.

Because it is a good representation of how console sales can change year to year. One console being dominant one year doesnt mean it will be the next.  That is his point, and the graph illustrates that.