“The slender tail and lack of a ramp means only side-door cargo access.”
Complete nonsense! The KC-390 has a bigger tail ramp than the C-130 and also a bigger cargo hold according to width and height.
Brazilian army wants to drive in their equipment like Superav inside without dismounting it. The cargo bay is 3.45 m width and 2.95 m high. C-130 is just 3.12 m width and 2.74 m high. 4 m x 4 m for A400M.
Noted. See #10 that I posted after checking.