This is the not place for comparisons. You do know however that Su57 radar is inferior and would not be able to spot and get a weapons lock on an F35 before F35 is able to spot and shoot at Su57?
Actually the Su-57 has at least five antenna arrays including a forward facing and two side facing arrays in the nose and wing root mounted L band AESA radar too.
The L band radar should be able t detect the F-35 at enormous distances because stealthy shaping does not effect long wave radar, and it would not be possible to put a coating on the F-35 thick enough to effect radar waves at that wavelength.
More importantly the Su-57 will be working inside an IADS network that would give it information about most of the things in the airspace around it.
This is the main reason why Su57 is designed to be agile to evade the first missile in the hope of getting closer to the F-22 later F-35.
Agility is always a design requirement for a fighter and when the technology fails... like radar and IR guided air to air and surface to air missiles, then what you have left is guns, which is where manouverability becomes important.
Su57 needs to further lower their radar signature and improve its radar.
Increasing stealth increases cost on a log scale... half the RCS means 100 times the price and halving it again means 1000 times further increase in price.... there is a point where it is no longer worth it. You might argue that America got it right and Russia got it wrong, but the fact that US F-35s are not being transferred to Kiev to obliterate the Russian air defence network and wipe out their airforce suggests they haven't.
Israel still uses F-16s because they do a better job and are cheaper...
The question is how much is needed to reach sufficiently accepted parity as one is defending and is being aided by land based radars and the other is on the offensive.
The delusion is that there is a level of stealth that will make you safe so you can fly with impunity over the battlefield dictating the situation like a god, and that level of stealth simply does not exist.
HATO will run out of planes before Russia runs out of SAMs and AAMs and cruise missiles will give them no place safe to land.
The Su-57 has a radar which was designed a decade afterwards. It is certainly superior to the one in the F-22 and probably the one in the F-35 too at least in air to air modes.
The L band radar in the wings of the Su-57 should be able to detect the L band datalink activity of HATO aircraft... whether they can jam it or not is another question but detection will indicate where their most stealthy aircraft are... passively...
The F-22 and F-35 are intended to dominate third world countries with 4th gen and 3rd gen fighters... or no air power at all.
The Su-57 is intended to operate in Europe hunting 4th and 5th gen aircraft.
An RCS the size of a marble or a mosquito my foot.
The amusing thing is that even if their claims are true how many marbles and mosquitos are there flying around at near supersonic speeds at 10km plus altitudes.
50 years ago such data would be removed from the radar screen automatically because it was obviously noise... these days the data will be carefully analysed to make sure it isn't noise, and an IRST sensor can be used to determine the IR signature of the target... a Mosquito or marble with an IR signature of an F-35 can be confidently marked and shared with other platforms and engaged. The L band radar will detect it as a F-35 sized target too...
@Pavi, fixed the quote for you. Your first quote bracket should not have a / in front of it, only the second quote bracket. So using squiggly brackets so it shows up on the screen, you want {quote}
{/quote}, and not {/quote} {/quote} which is what you had.
For users not wanting to type out the quotes in the tool bar above where you type your message in the fourth box of tools from the left there is a speech bubble... if you put your mouse arrow over it it will say "quote". If you click on that it will insert the correct code to post a quote. The cursor will appear between the two quote brackets so if you already copied the text just choose paste to insert the text between the quote brackets and you are done. Note when using this tool there is a box for the Author of the quote, which you can type in and that will be added to the html code for the quote. 
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The Su-57 significantly surpasses the F-35 in terms of weapons (various short, medium and long-range air-to-air missiles plus guided aerial bombs against a small array of air-to-air missiles and bombs), speed (2,600 km per hour against 1,900) and maneuverability, experts say. 
