It has worse RCS than F35 or J35. But it that can be improved by adding radar coating. And it costs at least one sixth the price of an F35.
So, when comparing it with F35, we need to compare SIX KIZILELMA and ONE F35. In this match up, I think it would be hard for the F35 to win. As it would have to hit every single shot. F35 can carry six AMRAAM inside the bay but if it carries stuff externally, it would have zero chance as KIZILELAM would easily lock on to the F35. KIZILELMA is piloted by AI, hence it can do higher G turns. I would say, its 50/50.
RE: Turkey Becomes Third Stealth Power & Tests Stealth Drone With BVR Missile