Looks to me a very common mentality amongst US media.
Of course the fact remains that the PS3 outperformed the 360 considerably taking equal timeframes, despite many extra months or even years of extra headstart (and more holiday seasons) taking such a measure. And despite having been sold at a much higher entry level pricing over this period and Microsoft shooting off its most anticipated games much earlier than Sony did.
The PS3 attracted mostly adult males, the Wii attracted mostly young preteen kids as well as many casual female gamers, the 360 mostly attracted young boys. Regarding me as an adult male, Sony's decisions resulted into a more relevant and solid userbase. Yes, highly specced and multi-featured the PS3 is not as much a cheap toy for kids, but I am personally very glad the PS3 is not specced like a Wii. What would the market have gained in terms of choice if there were 2 or 3 Wii-like products? There's still the PS2, which is still a nice Wii competitor (until a slimline PS3 considerably drops in price).
IMO that's a very valid perspective the US media seems to ignore at all cost. We also saw many very biased coverage of the Blu-Ray vs HD DVD conflict (HD DVD was technically inferior in every sense as well as lacking industry support in comparison to the support there was for Blu-Ray), IMO treat the bulk of US media coverage similar to this.