Ken, I have difficulty getting my head around your percentages as they could be referring to apples and pears.
20% bigger I can grasp in that it is one fifth larger but in which dimensions?
100% greater payload - double? 100% greater cargo volume - double?
About 20% more wing span and overall length & about 15% more overall height
About double max payload of A400 (38T/75T)
Less than double cargo volume (340 sqm/620sqm)
200% greater range at same payload - 4 times? Looking at Wiki I find that hard to believe. Care to quote comparative figures - X payload Y range?
Each at respective max payload (A400=38T/C-17=75 T) 58% more range (1,700 NM/2,700 NM)
Each at 38T payload (A400 max) nearly triple the range (1,700 NM/5,000 NM)
Each at 20T payload (C-130 max) less than double the range (3,500/5,800)
All the above assume MIL-C-5011B reserves, still air, ISA