Why Nintendo’s Core games aren't hitting the mark anymore

[theRepublic]

Avinash_Tyagi said:
Here's the thing, Mario Kart Wii sold 15.79 million, compared to 65, which sold less than 10 million and DD which sold less than 7

SMG sold only 7.93, compared to Mario 3 which sold 17.28 and NSMB which sole 18.62

TP sold only 5.26 compared to OoT which sold 7.6 and the original which sold 6.51

What the point he's trying to make is that, with the exception of Mario Kart Wii, the other major Wii core games have failed to garner the same market success as their predecessors

That is true, but his analysis as to why is lacking.  And that's being generous.