Why?
Because the accounting source isn't verifiable in Europe. They have no obligation to be accurate and from what I understand, very limited ability to be so, given the disparity of Europe and resellers there.
Extrapolated, sure, but at no point will I expect verified and accounted numbers from Europe.
Though I will say it is surprising to see the lead PS3 (and Wii) has over xb360 in Europe. I didn't figure Train Simulators and "Dating" Sims were European's cup of tea ...
This gen has turned out similar to what I expected in many aspects. I figured near library-equality and lower price-point would balance out brand loyalty and potentially edgier graphics.
Turns out I was close, but I didn't account for shunning of Xbox in certain regions for reasons unknown. The xb360 is smaller (big complaint last gen), the unit is cheaper (and cheaper to make), has nearly every game on ps3, has indi games as well as smaller "arcade" DD games, has a more comfortable game-pad, better online experience, and in most cases, multiplat games look better on xb360 as well. But I guess the handful of exclusives out-weigh all of this, and counter the exclusives offered by xb360.
Of course Wii's success grew a bit larger than I expected and stole some of the thunder from ps3/xb360.
The one thing that surprised me that I accounted for in my initial projections (predict 2010 marketshare) for ps3 equality for this gen was the lack of ps3 providing a superior gaming experience. I figured the xb360 lead would be eaten away by a superior machine winning away gamers later in the lifecycle by nearing price parity and offering a superior experience once developers got a hold of cell and took advantage of its abilities. This never really happened. In fact, the opposite has shown true. Yet, here we are talking about the better gaming experience machine with a lower-price point being outsold by a brand name.
Hopefully, next-gen MS will invest a bit more marketing dollars in EU to turn the tide. Every dollar wasted in Japan is a dollar that could be spent (wisely) in EU. That is the lesson to be gleaned from this gen.
I suppose it's part of the EU culture to be more loyal to a brand. Who knows.