Why are console sales the only thing they factor in? They're acting as if the 360 hasn't moved something in the realm of 100m more software units than the PS3. Not to mention the fact that they generate more online revenue. If console sales are all that matter, Nintendo won the generation, hands down. If we're talking about reputation, market penetration, profit, etc, it's a different story.
Also, wars are relative. Entering the generation, Sony entered the war with 2/3 of all territory(market share), and MS and Nintendo split the rest. Sony ends the war in worse financial shape and with 1/3 or so of the market share. If you exit a war with half the land you had to start, regardless of who won, you lost.







