http://www.guardian.co.uk/technology/gamesblog/2010/nov/29/top-ten-video-games
I managed to find the UK Top 10 on the Guardian website and 'MJ The Experience' isn't there.
Hardly surprising given that there has been hardly any promotion in the UK. I only saw 1 TV advert (though I do admit that was during the X Factor - a good slot) and no radio ads, billboards, magazine or newspaper ads.
Meanwhile other games like Dance Central seem to be advertised constantly.
Sony are still in the habit of releasing MJ products with virtually no promo.
Also, it was only released on Friday in the UK, so it should feature in the Top10 next week.
It's currently no.3 in the UK multi-format games chart on Amazon (updated hourly).