hm.....let's see
In a one class seating:
A342-404 pax 8,000nm 606,300lb(Max take off)
A343-440 pax 7,300nm 606,300lb
A345-313 pax 8,500nm 805,500lb
A346-474 pax 7,500nm 805,000

One class seating
B744-569 pax 8,320miles 875,000lb

It looks up to now...CX prefers higher capacity aircraft than a higher range one....and a nonstop HKG/JFK with a A346 is actually very very marginal..but of course only the CX management knows what they want though.