The idea that Russia is way ahead of the US in terms of modern weaponry is far from a false premise. Measuring the radar signature of two comparative jets has nothing to do with modern weapons development. It is an idiotic measure and shows how little you have in the way of convincing rebuttal to have chosen this arbitrary comparison. Russian air defences can see the "supposed" stealth jets and shoot them down. SU57 is faster(much), more manoeuvrable and easily as capable, if not more , than the F35. Why didn't you compare speed or manoeuvrability? The US problem, as I have stated many times previously, is that they have developed and produced weaponry for war against relatively defenceless countries. Their weapons development over the last decades has concentrated on weapons of attack rather than defence. Russian, as well as Chinese and Iranian, has concentrated on countering the US methods of aggression. They have done this successfully.
Now should Russia or Iran for that matter decide that they want to attack and invade the US, they would be ill equipped for the task. They don't want or need to do this though. They just need to keep the thieving western pirates from stealing their resources. For that task, they could not be better prepared. US/NATO could not "Shock and Awe"(their chosen method of war) Russia. Russia's way more modern and effective air defence and stand off missile capability would sink every carrier. Any jet that survived, none would, would have nowhere to land anyway. The F35 avoids airspace defended by Russian air defence. It would be too humiliating and damage the bottom line once it is shown up as the overhyped flying turkey that it is. Wouldn't last 5 minutes in a defended airspace. It's carrier would last even less time.
Iran demonstrated very publicly that US has no response to stand off missile capability. What if Iran had armed those missiles? So how do you imagine that US/NATO can defeat Russia militarily? They are incapable of invading and bombing Iran. They (US) didn't even retaliate against the Iranian missile attack on their bases. Why? We were promised that should Iran even harm one US soldier that the consequences would be like nothing seen before. They harmed well over 100 and nothing! Why?
NATO weakness has been exposed to the world. There is no going back. The world is moving on from Western colonialism.