Wah! That's pretty harsh, ma man.
I think the Russians felt the pressure to keep up with the US when they designed the PAK-FA and didn't take certain R&D procedures into consideration, or might have even bypassed them for the sake of timing and figured they would get back to addressing them once prototypes were built. I think that was the flaw in the way they approached the Su-57 and now they're dealing with ways to circumvent some of those shortcomings that they knew they were going to run into. Plasma cloud technologies and crazy things of that sort were all just shortcuts to a slightly premature design that while not necessarily bad in frontal and side shaping, the underside seems to be its biggest problem area. The rivets are hardly an issue with tape and RAM which all use, it's too many 90 degree corners, especially between the hanging engine nacelles and the belly where the weapons bays are.
But what was said about the v-stabs on the PAK-FA applies just the same on the J-20 because of them being all-movable surfaces, instead of fixed V-stabs with separate rudders. However, first thing I thought of was how the YF-23 was supposedly stealthier than the YF-22 and it had all-movable stabilators which must have seams/gaps in order to function and rotate. So I don't think that was a particularly fair criticism of the Su-57 or the J-20.
But I hope you fellas don't get too bent out of shape when someone disagrees or offers a contrarian view. But just because the F-22 came out in what, 1996? That certainly doesn't mean it's a museum relic as far as its avionics compared to the J-20. That's a bit biased to be perfectly honest with you. One thing you might not be factoring is the immense head start AND experience the US has over everyone in all major aspects of aviation and technology as well as their abilities to constantly upgrade. If one is to be objective, one MUST take these things into consideration.
There's also other major factors that are associated with the overall prowess of a 5th generation aircraft and that is the engines. I don't think that anyone of us here are in any disagreement that the US makes the best military aircraft engines and has been for a long time. The P&W F119 engines on the Raptor are a huge part of its combat performance capabilities.
And BTW, the F-22 is getting a complete revamp of its glass cockpit and avionics that includes AI etc..
https://www.themaven.net/warriormav...ors-radar-avionics-ai-BMw9vbS3xk2dymJlS4PW2g/