Again frequent flyers care about comfort while while execs care about fuel efficiency with the rising cost of fuel.
This from an old airliners.net post:
Quoting DfwRevolution:
To expand on what Seanp11 has stated, the A345 is about 16,000 kg heavier in terms of structural weight. Payload greatly favors the 777-200LR

772LR OEW - 154,090 kg
A345 OEW - 170,400 kg (+10% dead weight)

772LR max payload - 64,000 kg
A345 max payload - 56,500 kg (-12% payload)

772LR fuel volume - 181,200 Liters
A345 fuel volume - 213,100 Liters (+17% fuel)

772LR max range - 17,400 km
A345 max range - 16,020 km (-6% range)

In summary, the A345 needs 17% more fuel to move 12% less payload 6% a shorter distance than the 772LR. How impressive...
http://www.airliners.net/aviation-fo...d.main/289400/

And also... the 77L is 3% more fuel efficient than the 77E. In short comparing same payload/range EK can move more passengers, uplift more cargo AND AT A 20% LOWER OPERATING COST with the 77L than the A345.

In today's world it's all about fuel efficiency (yes even EK in the Middle East...).