That would be a cruel move by Nintendo and I'm not sure whether it would be able to manage keeping MGS4 off the top, at least for the 1st week.
On a side note, I was looking into the size of the UK market compared to the Japanese market.
This
report from ELPSA says that 75.9m units of software were sold last year in the UK and
this post puts the Japanese 2007 total at 67,539,900. Although it appears the Japanese figure is only based on the top 500
its unlikely total sales would top the UK figure.
Why is it then that the UK market is always ranked 3rd to the US and Japan when it looks like it is at least joint second?