You are right, it's really week 52. I did a mistake, because i saw mario and sonic at olympic games, instead of seeing mario galaxy at this link we have posted in week 51:
http://www.gamekings.tv/index/nieuws/gfk-megacharts-de-kaarten-zijn-geschud/
For our previous post, we did'nt make mistake, because the week must ended wednesday or thursday in the charts of Netherlands, and these two charts:
http://www.gamekings.tv/index/nieuws/pro-evo-doet-het-goed-in-de-gfk-mega-charts/ (week 43 because first week of pes 2008, really posted by me in week 43: http://www.vgchartz.com/forum/thread.php?id=9687).
and
http://www.gamekings.tv/index/blogs/nieuw-gfk-mega-charts/ (week 46 because first week of Assassins creed, and 4th week of pes 2008, really posted by you in week 46),
confirm my opinion, with these two more argument:
At this link, they clearly said that Assassins creed was available recently for the week 46 in Netherlands :
http://www.gamekings.tv/index/nieuws/gamecharts-call-of-duty-4-is-heer-en-meester/
(They said he was available only since "dinsdag", which must be tuesday)
and mario Galaxy was available in Netherlands in the week 47, because friday in the week 46 of us in France or uk..... , and appears for the first time in these charts:
http://www.gamekings.tv/index/nieuws/gfk-mega-charts-assassins-op-1/
we have posted in week 47.
In the last charts posted by Kirby, it's the 7th week of Assassin's creed, so week 52 in Netherlands.
So sorry Kirby, you were right. I will delete these charts, i have posted for week 1 in 2008.
Thanks Kamil.
Edit: due to this new link (see week 2 and 3), it must be the week 1:
http://www.dutchcharts.nl/game_charts.asp?cat=&year=2008&date=20080105
Week 52 must have been never published.