KAAN block 10 is 4++ aircraft. Realistically speaking, it ain't gonna effectively challenge F35 block 4 which is Greece is getting. Wait for KAAN block 30 with indeginous stealthier engine, higher degree of sensor fusion and potentially new BUFRIS.(?)
The arguments made for KAAN Block 10 being a 4.5+ generation fighter is primarily related to engines. Where is F-35s supercruise? Is F-35 then 4.5+ generation as well?
If I am not mistaken, BURFIS will be ready for KAAN Block 10.
As mentioned, in some aspects Block 10 will be superior to F-35 and inferior in other aspect. It will be the resposiblity of military planner to make sure that the combat scenario favors KAAN.