There are 1 million accounts created, yet by April 20th the game only sold 460,000 global units across all three platforms, with sales dropping off between those 3 weeks. For example, PC dropped by 77% in week 2, and 49% from that in week 3. Xbox dropped 63% by week 2, and 41% from that in week 3. PS3 dropped 64% by week 2, and 35% from that by week 3.
Over all:
http://www.vgchartz.com/gamedb/?name...=0&results=200
PS3:
http://www.vgchartz.com/game/70006/defiance/Global/
Xbox:
http://www.vgchartz.com/game/70007/defiance/Global/
PC:
http://www.vgchartz.com/game/70008/defiance/Global/
So, either Trion is counting forum accounts (as Cryptic did with STO when they once made the same claim, in a very similarly worded press release), or they miraculously sold a hell of a lot of copies in the final 10 days of the month, completely doing a massive turn around on the drop off in sales per week from the first 3 weeks of the month, despite the lackluster reviews and press the game is getting at most places.
While the viewing numbers for the Defiance show also show a drop-off in numbers (though not a huge one, which I very glad of, as I really like the show).