I could say you are looking at this from strong pro russian viewpoint which is ok, but it's certainly not objective. an objective viewpoint would be one of neutrality. just because you think you're right doesn't mean you are (and I'm not saying I'm right either), just don't go all 'peasant' and keep it civil ok?

many of the things regarding these aircraft are classified and there are probably some capabilities we will never know about or maybe for a long long time like the electronic warfare capabilities and actual stealth, max thrust, speed, ceiling etc.
the russians are not so 'in' with the chinese you like think. ok, so the J-20 does look like mikoyan 1.44 but for all you know they could have just sold them the plane without explaining how to build any of it, which is especially important. the 1.44 also didn't get a massive amount of funding so it is unlikely that the avionics are much more advanced than say 4.5gen fighter. also, don't forget that russians and chinese will be competing for foreign sales of aircraft and russians will be unlikely to want to help their competitors like that. russia has already got angry at china for copying one of their engine designs.
actually the general consensus is that us avionics including radars are generally better, infact the israelis are also very good in this field, but russians might be better at making sams like s-400. if a ground based sam will struggle get a lock on F-22 from 50km there is no way a PAK FA can get lock on within that distance. maybe the L band radar could slightly detect F-22 from that range and further but this band of radar is inaccurate and you can bet it won't be able to get a lock until X-band detection or infrared detection (maybe within 25km for IRST). F-22 has much higher level of stealth than PAK FA and F-22 has better radar so most likely F-22 will get lock on first, but the effectiveness of the missiles (maybe 50km) at this range is not so good. some people also doubt whether the russian radar has 'low probability of intercept mode' meaning it might be very easy to detect the PAK FA when the radar is on. the US radars are very good at this and helps them get 'first look, first shot, first kill'.
FA18s I'm not sure about but they are probably stopgap measures because the electronic warfare suite of F-35s will be much more advanced. F-35 will be even more advanced than F-22 in some areas and it is a much more capable airplane than the media wants you to believe. obviously it won't be truly dominant in A2A like the F-22 but it still has many great capabilties. it can even fire at planes behind with AIM-9X and helmet targeting. russian RVV-SD can also do this by 'flipping' when it exits weapon bay.
most likely US navy could shoot down a sunburn missile, especially when they have the new zumwalt destroyers, but AEGIS system is also very good. the problem with these systems is that you can easily defeat them by a firing a massive amount of missiles at them to overhwelm, which is what someone like russia/china etc would do. this probably won't be overcome until directed energy weapons (i.e. lasers) come into full force as point defense weapons on ships. the technology is still relatively undeveloped at the moment but is making good progress in the last 15 years. railguns are more advanced right now than lasers.
third point I agree, the detection ranges will still probably be too far for any missiles to be effective (unless a lot of missiles are fired) so either it will end up in dogfight (who knows what will happen here, also depends a lot on pilot skill) or they will just run out of missiles and fly away to save the plane.
f22 definitely had a lot of flaws, but most of them are ironed out now, even the oxygen issue. turns out it was actually a valve on the pilot's vest and not the actual plane so the problem was 'easy' to fix. the biggest problem remains the RAM paint which is a lot of work to maintain. the F-35 is much better for this than the F-22.
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Mig35 is a good plane no doubt it is a probably good match for planes like F15 stike eagle/silent eagle, eurofighter and FA18 super hornet but for a 5th gen fighter it will basically be like clubbing baby seals. the mig35 will never even detect one of these stealth planes because the stealth plane(s) will see the mig first, fire its missile(s) then head back. it is basically 'old' technology now; the avionics are good but it is not a true stealth airframe. still a very capable plane but outclassed by the most modern ones.