I have been on this 34 APP several times in the 747, and it really is a horrible procedure. That last turn to final is quite the adventure, even on a good day.
I've done it in a 747 a number of times with no dramas though admittedly that was after 9 years of doing it in a 767. In reality it's no harder in a 747 than any other type. Currency and awareness make it easier- particularly on days where you note tailwind component across base.