I have another explaination ...
Three Week Floating Averages for worldwide weekly Wii sales in 2007:
| 2007-01-14 | 272,342 |
| 2007-01-21 | 254,404 |
| 2007-01-28 | 246,230 |
| 2007-02-04 | 235,274 |
| 2007-02-11 | 222,031 |
| 2007-02-18 | 220,725 |
| 2007-02-25 | 212,973 |
| 2007-03-04 | 199,927 |
| 2007-03-11 | 186,376 |
| 2007-03-18 | 188,210 |
| 2007-03-25 | 184,261 |
| 2007-04-01 | 177,887 |
| 2007-04-08 | 173,420 |
| 2007-04-15 | 191,754 |
| 2007-04-22 | 228,587 |
| 2007-04-29 | 257,818 |
| 2007-05-06 | 261,594 |
| 2007-05-13 | 238,135 |
| 2007-05-20 | 218,275 |
| 2007-05-27 | 220,532 |
| 2007-06-03 | 225,474 |
| 2007-06-10 | 230,692 |
| 2007-06-17 | 224,194 |
| 2007-06-24 | 225,246 |
Now if you take those averages as a percentage of the average worldwide weekly total you get:
| 2007-01-14 | 121.8% |
| 2007-01-21 | 113.8% |
| 2007-01-28 | 110.2% |
| 2007-02-04 | 105.3% |
| 2007-02-11 | 99.3% |
| 2007-02-18 | 98.8% |
| 2007-02-25 | 95.3% |
| 2007-03-04 | 89.4% |
| 2007-03-11 | 83.4% |
| 2007-03-18 | 84.2% |
| 2007-03-25 | 82.4% |
| 2007-04-01 | 79.6% |
| 2007-04-08 | 77.6% |
| 2007-04-15 | 85.8% |
| 2007-04-22 | 102.3% |
| 2007-04-29 | 115.3% |
| 2007-05-06 | 117.0% |
| 2007-05-13 | 106.5% |
| 2007-05-20 | 97.7% |
| 2007-05-27 | 98.7% |
| 2007-06-03 | 100.9% |
| 2007-06-10 | 103.2% |
| 2007-06-17 | 100.3% |
| 2007-06-24 | 100.8% |
Now, I could be wrong but I suspect the reason why numbers were higher through January was that Nintendo was shipping stockpiled units from Japan in an attempt to satisfy 'launch demand'. February and (early) March's 90% number (potentially) represents Nintendo's actual manufacturing capacity at the time. In March (and through April) Nintendo could have been upgrading facilities which would have (potentially) lowered manufacturing capacity at the time but enabled them to produce far more systems for April.
We could be seeing Nintendo (once again) upgrading existing facilities (or moving manufacturing to larger facilities) in order to boost production. The timing would make sense because the Quarter is at an end and Nintendo would be able to announce it at E3 ...
