I notice this years stat pre occupation has shifted away from assists and now resides with distance covered in km's.
I'm really not sure what this is meant to conclusively prove, as I've always wrongly assumed that the team in possession will at times cover less distance than the opposition, who run around much more trying to dispossess them. A bit like a good squash player.
In contrast, and as Wenger is at pains to point out, Lester and others won a fair amount of games last season by having less than 40% possession.
For every argument, there's a contrary point, it just gives pundits something else to talk about other than it being a games of two halves I'd guess.
Do we really give a toss about how much running about goes on in 90 mins. Apparently West Brom covered more ground than any other PL side this weekend :-/