While this is true, the PS3 was coming off of a generation where the PlayStation sold five times as many consoles as Xbox. Early last gen, Xbox was a "non competitor" that many felt would suffer the same fate as the Dreamcast. There's a quote that I read in a magazine that went something like:
Sony: "We've been in this position before. PS1 first, N64 after. Dreamcast first, PS2 after. It doesn't matter what the Xbox 360 sells. We'll overtake that quickly and it'll be business as usual."
Somewhere along the way, the Xbox 360 turned into a real competitor and Sony really did have to start taking them seriously. I don't think the 360 even reached their goal of 10 million in the first year. Sony slowly chipped away at the lead but it took pretty much the entire gen and a lot of money loss to earn a "victory".
You are right on your premises, still that isn't put in the article, he just doesn't even know about sales when you see what he wrote. Much less about sales trend and historic.
I also like one quote that I just can't find that is from 2009 or so "Even if we stopped selling X360, PS3 wouldn't reach us".
Looks like both companies have said things they probably regret! Lol!
Weird, though. Like you said the Xbox 360 lead was never that big. It just took long time for Sony to overcome it.