Bad sales in Europe, decent in Japan and America. Will probably do 700-800k lifetime.

That's a pretty significant drop, but I wonder how it translates into sales.

Had to use the guide once, about speed-boosting through a dirt wall, largely because i was looking for a hole significantly higher up, but kept running into invisible walls.

European performance on this is abysmal, though. The big Nintendo franchises really don't have the same natural pull in the region (with exceptions)

I'm playing it on hard mode and it's fucken ridiculous. In hard mode u dont get any expansions, u play the whole game with 10 missles and the health bar.

Ouch- clearly Nintendo games aren't popular around the release of Halo: Reach in the UK (seriously, it's the only thing in this country, it's almost as though nothing else exists!)

More fool them, they're missing out on a great game.

Or maybe the game is just not what people want.

I find that hard to believe

Well it's better than your own hypothesis, which is falsified by the fact that there are a number of "Nintendo games" higher on the UK chart than Other M.

Considering the sales of NSMBWii in EMAA, I think it's safe to say that was a hit in the UK as well.

If the legs for Other M don't hold, it's likely they will swtich to another Prime style game next time.

I wouldn't go so far, but they'll probably move away from the dialogue/cutscene-heavy direction of Other M.