Oh, I forgot to link this image that somebody on neogaf summarized (again, note the "sales to retailers" = shipped not sold numbers). Historical note, I believe the 360 was severely supply constrained when it launched. Part of it being rushed out and their red ring issues.:
With the 2.8 million PS4's sold versus the 1.2 million Xbone shipped to retailers, it is not unreasonable that the current pace of actual sales to consumers is roughly 3:1 right now. If the pace of the Xbone sales continues to decline, that ratio could be even larger by the time E3 hits.
Regardless, it's certainly not as bad as the Wii U.
