Compare to the JH7A on techtree,the JH7A Prototype only have 2.85 basic coefficient of SL and compare
to other countrys’ plane such as AV8B(NA) or SU-39,it’s obviously low.
Good luck getting as much SL in an AV8 or SU39 (outside of GRB) than the JH7 lol.
as for SU30, Higher BR usually means bigger rewards so things are still fine