Laugh! Laugh at the inferiority of the untermenschen-crafted weapon! 
Featuring such golden comment chains as:
One a/c on the assembly line. Look at manufacturing sites for F-35 and F-22. Dozens of aircraft lined up. That’s the difference.
That’s the first thing I noticed. Russian industrial capacity has literally collapsed, I never realized they were this weak. Compare that to their Chinese allies who have been able to produce an impressive number of J20s pretty fast even though the SU57 had its test flight earlier
Too many people stealing money and limiting their capabilities. Good lol*
*not like our trustworthy Raytheons and Northrop-Grummans, of course 
The F-35s were made for profit and have a distributed supply chain over a dozen countries so they need the sales first to keep the contractors paid and happy and their factories running, even if it means there are major defects that may or may not be fixed in the future.
The Su-57s were designed and built as a handful of prototypes intended for rigorous testing to work out all the kinks before even starting a serial production on it. The process takes longer but you have a more or less robust aircraft by the time serial production begins and have far less defects and flaws to worry about.
Very different mentality here.