I thinks thats what they always meant with shipped .
Nah, Sony used to count rolling off the assembly line as shipped. This caused some wild inconsistencies in the past.
These numbers are still not directly connected to WW sales..for example there was quarters last year where 360 only shipped 500-700K despite sales being a lot better than that. Due to them overstocking to hit 10 m the prior year.
Overall that stuff equalizes out in the long run though. And the reason I like these numbers so much is they really cant be fudged, and account for the whole world, including places you could never get reliable sales figures for.