Another "Shipped" Rant

Jordan Crook, whose work I typically enjoy:

According to the firm, Apple shipped nearly 23.4 million mobile PCs in the fourth quarter of 2011, which is 128 percent year-over-year growth. Cupertino sihpped over 62.8 million mobile PCs over the entirety of 2011, representing 132 percent year-over-year growth.

Who gives a rip about shipped numbers?!!?! (Note the excessive punctuation to illustrate my frustration). Shipped numbers don't mean anything unless you put them together with sold numbers.