Here are some estimates from gaf on x1 to 360 shipments for their first year + launch quarter:
XOne CY 2013- 3.90m
XOne CY 2014- ~7.60m - 8.10m
Total: 11.50m-12.00m
X360 CY2005- 1.50m
X360 CY2006- 8.90m
Total: 10.40m
http://www.neogaf.com/forum/showpost.php?p=149251271&postcount=117







