The only possible rationale (to me), is that with the release on Layton 2 in US & Europe, people expect the old games in the series to have a boost in sales (people that didn't bought #1 to buy it based on their satisfaction level of #2). This happened in Japan when Layton 2 was released, and it is a fair assumption that it will happen again. Whether this boost are sufficiently big enough to made it reach 4.26 Million is anyone's guess.
Notice that Layton series (currently have 3 games, IIRC), have 2.65 Million in Japan. Averaging it gives us 900K / games, which means that series stayed strong throughout 3 games, which is an achievement by itself.
The actual rank is rank 30 : 865.954 for Layton 2 and rank 36 : 718.147 for Layton 3. Layton 3 is only out about 5 months (since 27/11/2008), and I am pretty sure it will reach 800K+ by end of 2009.
1
Official data :
Layton 1, US & EU : 1,590,000.
Layton 1, Japan : 928.597 (currently rank #27)
Total : 2.52 Million, Worldwide.
The only possible rationale (to me), is that with the release on Layton 2 in US & Europe, people expect the old games in the series to have a boost in sales (people that didn't bought #1 to buy it based on their satisfaction level of #2). This happened in Japan when Layton 2 was released, and it is a fair assumption that it will happen again. Whether this boost are sufficiently big enough to made it reach 4.26 Million is anyone's guess.
Notice that Layton series (currently have 3 games, IIRC), have 2.65 Million in Japan. Averaging it gives us 900K / games, which means that series stayed strong throughout 3 games, which is an achievement by itself.
The actual rank is rank 30 : 865.954 for Layton 2 and rank 36 : 718.147 for Layton 3. Layton 3 is only out about 5 months (since 27/11/2008), and I am pretty sure it will reach 800K+ by end of 2009.