The F-35 is a excellent aircraft. It will perform air to air missions extremely well. Its dogfight performance is mostly besides the point, as most combat now and in the future will take place well beyond visual range. If a dogfight does occur, it will be with HOBS weapons, which make dog fighting a moot point. Even within visual range the age of the dogfight is over. You don't dogfight when you and your opponent are launching 90 degree or 180 degree IR missiles that have 100% flare rejection at each other. You cannot evade that missile. If you are in parameters, you die. This is one of the biggest reasons the USAF and many other air forces DO NOT want to come to a merge: it is too lethal. There is a good chance that everyone dies.
Not to mention alot has to happen for a F-35 to actually GET WVR.
First your enemy has to somehow get past you in BVR. This is possible, but given stealth and superiority in sensors, it is unlikely that a opposing force will get there without extremely high losses. If at All.
Then, once you get past the BVR phase, you the have to actually FIND the F-35 and run it down. Also unlikely. Stealth makes that very hard. And if you find the F-35, running it down is problematic because a loaded Flanker will not run down any clean aircraft with a weapons load. Drag etc. There is also a high possibility that said F-35 is dragging you into his own SAM or friendly fighter support. Anyone chasing a F-35 is going to have to be a full after burner in order to even have a chance of getting to weapons range in a tail chase. Good luck with that.
Assuming you DO get to a visual fight, you then have to get to a point in that fight where kinematic characteristics even matter. With DAS, the F-35 will see you first. His buddies will also see you first. Even with a data-linked Flanker you are going to be at a huge SA disadvantage. IF he sees you first and shoots a aim9x or even makes a gun pass before you are aware: you lose.
All that aside: you might have a chance!
