ok, by definition this isn’t sustained turn
YET:
you’re comparing pulling abilities in a left turn turn of more than 3x360°,…
Rafale made 3 turns in 29 secs
Gripen made 3 turns in 27 secs
EF-2000 made 3 turns in 33 secs
so from what i’ve seen and considering the whole thing,… it is completely normal.
you’re just bullshiting yourself because you consider EF-2000 is necessarely better than the other 2,… which is wrong,… because they’re not the same overall,…
now considering airflow, in engines, your EF-2000 nose is in the way of your ventral air entry,… meaning the center of it isn’t getting as good airflow than others,… i told you that already,… but it means that the air entering that area is in turbulent configuration which significantly reduce the air flow.
a reduced airflow means that some of the combustion isn’t able to happen, reducing your thrust output by a sgnificantly enough margin.
out of 3x360° turns, it is normal to see an impact.
and as i’m repeating myself AGAIN,… the wing airflow on the EF-2000 seems to be compressing onto the wing, making to wing to be unable to produce more lift = No More Angle = Less AoA = Less Drag = Less Energy lost from turning = increased turn Radius = more time to complete a single turn
oh,… this is matching the video results.
now, if you have no sources of real data values (declassified ones), your video just shows nothing here