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".
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
Azzanation: "PS5 wouldn't sold out at launch without scalpers."