Well yes, the AN-72 is currently 2 times larger,…
Yet you have to account for it’s acceleration capability compared to mass:
About 24 tons(full fuel, no cargo), with 127.8kN of thrust.
→ Power/Weight Ratio of 0.53 which is better than most aircrafts of 8.3/8.7
This can only show a good ability for the aircraft at low speed (i admit: relative to the aircraft size)
But making it too low BR would make it impossible to shot it down,…
The aircraft is currently too good for it’s climb rate, as for the ceilling,… it is possible to hide from any 6.3/7.3 aircrafts and being out of range kinda easily.
Not to forget that it might have Flares/Chaffs(still in use today), and completely out of any cargo in-within the game.
And that aircraft was made for Short Landing and Take-Off and reduced speed,… means the Current stall speed is very low(so low that apart Ar-234, not a lot might be as close)