Not to improve the OTP of the 747's, but for the A380.
That is not my experience, and given that A380s do not fly SYD-MEL commercial sectors, I doubt the increased sector times were introduced for the A380.
Last LAX-MEL, we had to fly at CI 0 to come close to arriving on schedule.
What I'm trying to say, is that whilst I at first thought as you do, the evidence does not support the assertion you make.
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