Source: http://ps3.ign.com/articles/121/1212831p1.html

It's all about the numbers.

This month, the PlayStation 3 turns five. Having sold 55.5 million units worldwide since its launch (according to Sony's most recent numbers), the PlayStation 3 isn't living up to the unreal sales numbers of the PlayStation (102 million units sold since 1994) or PlayStation 2 (153 million units sold 2000), but it's holding its own against its closest rival, and, according to the numbers, will eventually outsell Xbox 360. 

Xbox 360 launched a year earlier than PlayStation 3. It has sold 57.6 million units worldwide according to Microsoft's most recently released numbers. PlayStation 3 is 2.1 million units behind Xbox 360 in units sold, but it's also been on the market for a year less time than its primary competition. 

Underestimated.

i never understood why people care too much about sales, you got the console you like you shall play it.
yeah i know i'm in VGchartz.... i have no idea how i ended up here to be honest.

I don't know. This generation is winding down. Nintendo is releasing a new machine next year and both MS and Sony won't be long to follow. The gap may be close, but I think things are going to stay pretty much the way they are. When the Wii U hits, it's going to get all the attention. At that point everyone will just start waiting for the next Xbox and PS4.

Wow does it even matter anymore? I mean the 360 was a success despite the RROD and the PS3 being a superior console even if that superior part didn't show up in the games. Anyway the 360 will probably get a massive price drop soon probably $100 sometime next year. So that alone will put off the PS3 passing the 360 until 2013 but by then next gen will be inbound and everybody will forget about PS3 and 360. Honestly i think it is impressive that MS has been able to enter the market when Sony was the dominate player in the market. Now look MS and Sony are going blow for blow this generation and will probably continue into the foreseeable future. Oh and the fact that 360 is 299 in USA and the PS3 is 249 i guess it shows that Americans weren't buying 360 because it was cheaper they just like it better than playstation.

I really didn't see this happening, but now a look at the numbers makes me look at the PS3 & 360 sales a lot differently. But even if that day does happen I can already imagine people saying "too bad the 360 already won years ago derp no one cares about this gen no more derp xbox 720 derp"

Well for me software sales is more important than Hardware but it would also a nice to see PS3 outselling 360 because I am PS3 bias. XD

Anyway, I want the games that I want to sell well. It will ensure my favortie games or series to have a sequel. If it didn't sell well then no seuquel so yeah I care a lot about software sales.

To sum it all up. I care about software too much because it will affect my future enjoyment in games.

= Me

This late into the generation, and taking into account the loyalty brand that previous PlayStations had established, it's no big feat.

Whereas 360 managed to double the numbers of its predecessor(Meaning that the brand has actually managed to grow), PS3 is unlikely to even hit the first ancestors numbers, let alone the predecessor.

Perspective people.

It always seems to come down to "getting rid of that one year head start"

Oh well i'm almost positive at this point that the PS3 will eventually outsell the 360.

I have no doubt that ps3 sales WILL overtake xbox, if not this gen then next gen as I suspect sony will support ps3 better after the launch of ps4 than MS will support xbox360 after the launch of the xbox720. Not really that important at this stage of the cycle, but I have to say Im enjoying all the ps3 games Im getting.