Keypilot: The significance of this is what it says for the concept of all-business class travel, a new (and therefore small) but also potentially significant sector.
Here's some figures of capacity share (weekly seats) in the Europe-US market:
European majors - 52.2%
US majors - 46.3%
European leisure carriers - 1.5%
Premium fare carriers - 0.1%
Significant?