Because the 7e7 and A380 are the more advanced planes around, more advanced than what's inbetween
Hold on a second. Let's fast forward to 2010, and make a somewhat bold assumption that the 747-Adv will be launched.
If this does indeed happen, the 747-Adv will no doubt benefit from a next-generation engine relative to the Trent 900/GP7000 and improved seat/mile cost via a 3-meter stretch. The 747-Adv will obviously be no match for the A380's payload, but is it unreasonable to assume the -12% efficency improvement the A388 enjoys over the 744 will be seriously (if not completly) marganalized? I'm inclined to think so, thus your picture is skewed. In 2010, not that far away people, the A380 is the fourth
most advanced airframe behind the: 7E7, A350, and 747-Adv, likely in that order.
Historically, airline capital gravitates toward the newest product on the market, regardless of size. Of course
the 7E7 and A380 compete! An airline only has X dollars to buy Y number of airframes. Boeing and Airbus are competing over an airline's money
be it in the form of 100, 200, 300, or 800 seat airplanes. Again, airline capital gravitates toward the most modern/cost effective airplane on the market...
Now if the A380 is the fourth
most modern airframe on the market, the 7E7/A350 offer better seat/mile cost (and they will), the 747-Adv offers equal seat/mile cost (and it could), where will the airline capital flow? Sure H2H will live on, but will the A388 necessarily be doing it? The A388 undoubtably won several orders on the basis that, regardless of capacity, it was more modern than the 744. Obviously this wasn't SQ
and other LHR
bound carriers, but LH
who almost held out on a 747-X proposal??
Point is (1) the A388 will continue to slaughter the 747 on the mega-capacity routes, but (2) don't be suprised when CX
and others start lining up in Seattle for a 747-sized aircraft with A388 economics. and (3) airlines could make 767/A330 replacement a higher priority than aquring A388/747-Adv given the superior economics of the smaller 7E7/A350...
[Edited 2005-01-19 04:08:24]