Hydrogen Alpha . . .
"...delivers the performance that Boeing promised for the -8F if they are to survive and prosper in competition with B777F operators..."
The B772F vs B748 is not a contest.
Two completely different animals in respect to:
1. Nose door for outsize cargo;
...unless you wish to reinvent a comparison between apples and oranges.
Until you have learned to comprehend the competitive dynamics of the air cargo industry, you will be unable to understand why your comment is total, utter rubbish.
Suffice it to say that;
1) nose loading is an irrelevance for the vast majority of freighter operators. The nose door often remains closed during turnarounds on those aircraft that have it, while the B747-400BCF has been a success without it.
2) The fact that the B747-8F offers 29% more volume and 26% more structural payload (but 10% less max payload/range) than the B777F does NOT render them "two completely different animals".
Every single operator that has evaluated the B747-8F will have compared it with the B777F - and many have gone on record as having done so - and the respective order books show which type has come out of that evaluation on top.
Simple fact, acknowledged by Boeing: Without the B777F, the B747-8F would have many, many more orders than it has today.
Until you learn to comprehend that the inherent directional imbalance in many major airfreight markets gives the advantage to the lower-capacity, fuel-efficient B777F (i.e. no good if the B747-8F has lower unit costs if it flies out to China with only 50 tonnes on board - the B777F will beat it on a round-trip basis every time), you will not comprehend why the major integrators and freighter operators love the B777F and are unimpressed by the B747-8F.
Time to learn, Glueball. Only then will you comprehend.