Russian era of aerial supremacy is already over. Its a fact. China at least in the electronic sector is ahead of Russians. Heck even Russia buys electronic parts for its jets from China.
There is no doubt Chinese companies will leave Russian Sukhoi behind in every area.
Once China was importer of Soviet technology, nowadays, they have their own versions. Deserves respect
Problem with J-10 is that it doesn't have the required duration. It cannot remain in sky for a long period and needs to refuel. An other problem is that it cannot do much against a combination of F-35 and F-22 assisted by AWACS.
The F35s represent a small portion of the fleet for IAF. The bulk of the operations were done by F15/F16s.
Yes, the USA supports Israel, but even when you look at the current set of operations that the USA did, it was a specific targeted operation with B2s/F22s against one target. The USA wants to move its focus from the middle east to east Asia and China.
The purpose of having an air force is not to "beat" Israel or anyone else, it is to change the "cost" calculus that any operation is simply not worth the cost itself and that calculation forms part of the deterrence cost. Right now, Iran has no real deterrence to the IAF.
If Iran demonstrated the ability to go after air-to-air refuellers, then would NATO / USAF fly so liberally close to Iranian air force? The answer would be no. That would force a reduction in the tempo of IAF operations against Iran and move the operation into a window that is manageable by Irans AD and air force. Right now, Iran's airspace does not have to be contested at all. It is a free for all for the IAF.
So, yes, if China is willing to provide J-35AEs, then that should be part of the mix, but it would be short sighted to suggest you don't need other types of fighters. Even the PAF, which faces a much larger enemy than Iran does in Israel, is planning on a fleet of JF17PFX, J10CEs to operate alongside stealth platforms like the Kaan and the J-35AE. You have to ask why? The PAF, knows what it is doing, right ?
We have to go for Chinese J-31 or the naval version J-35. If Chinese government restricts foreign export of these items then we have no choice but to pursue a local project.
It is time accept that right now, Iran cannot develop and field a 4th gen platform, so the talk of developing and deploying a 5th gen platform makes no sense. Iran has to stop tinkering with the concept of "pursuing a local project, Iran has tried for decades and failed. It will continue to fail for years to come. Right now, Iran has to buy off the shelf as quickly as it can, the capability gap in the Iranian air force simply cannot be ignored anymore on the hope of some mythical home grown project that Iranian industry cannot hope to deliver on
Even if eventually, it becomes inferior to Chinese ones, good point would be that it can be manufactured at will. It can be upgraded whenever deemed necessary.
You need an effective level of capability and deterrence now, I would have hoped that would be apparent after the failings in the 12day war ...