Smiles and Cries said:The DS lagged for months but since they had a head start they still kept the lead over the PSP and then started to sell better during something GAF called "Easter" (which has not ended yet) and Nintendogs
Technically, Easter ended in January 2006 when shortages after the insane holiday period caused the PSP to surpass the DS for one or two weeks. Easter 2 came after that.