The PS4 version of Watch Dogs accounted for 49 per cent of first week sales, followed by the Xbox One edition (27%), the Xbox 360 version (13%) and the PS3 edition (9%).
http://www.computerandvideogames.com/465547/uk-chart-watch-dogs-sets-new-ip-sales-record/
GAF estimates
Watch Dogs PS4 (49%) - 190,120
Watch Dogs One (27%) - 104,760
Watch Dogs 360 (13%) - 50,440
Watch Dogs PS3 (9%) - 34,920
Watch Dogs PC (2%) - 7,760
so between PC and UK sales so far we know Watch Dogs sold around 790k. i wonder if it can do 2 million first week. it certainly seems like it can.