Macn No at CRZ starts out at around .84 at TOC, drops back to around .835 when it's time for the next step climb.
However, somewhat dependant on the CI. The fleet started out at 130 but back a bit now. Supposed to be going to individual flight CI's soon, I believe.
As I recall, the FP gave 13t for the climb to FL320 plus 1.5t for taxi.
Overall, for the same sector, it seems to be easily capable of about 2 - 3000 ft higher than the 747 can do. At least that's the impression I have at the moment - only been on the thing for three months so I still have my "P" plates on at this stage!!!
Have another LHR in a few days, so will see what the numbers are then.