I know this is kind of a dead horse, but it is amusing to me that the difference in verbage there is literally a factor of 8 (almost a proverbial order of magnitude). Geeks often know, but laymen very rarely do. Kind of a big thing to gloss over, regardless of which side (AT&T, Verizon, WSJ) you are on.

This is the WSJ; did you really expect them to know the difference?

No, two gigabits is correct. Its publication follows AT&T's new year's resolution to just come clean about what their network can actually deliver.