Thats interesting. I haven't really followed the console market data at all since like.... they launched. But I was under the impression that the PS4 was.... well... PS2'ing this entire generation. Xbox has really come that far back to lead console sales in the US 4 months running?
Saying the PS4 is "PS1-ing" would be more accurate. Xbox One is definitely far behind but it's not at a PS2 vs. Original Xbox level.