how about large enough for the most advanded radar each countries can field
and please tone down the sarcasm, anyone is free to talk about J-20 measures as long as its a fruitful discussion, and remains pertinent
J-20's length is an important variable, and it is nice to see most people now can agree to a certain number, until proven otherwise by official PLA released information which noone knows when (if ever) will be released
J-20 is just another aircraft (taking flaks
), a very interesting one that is, but it is not some holy object one must not speak/speculate of, to insist otherwise is just as bad, be reasonable