It's obvious you're only interested in believing any sort of calculations that seem to result in a pleasing number to you. I'm as interested in J-20's numbers as anyone and I want them from Chengdu. I don't want amateur internet calculations by someone who's not even doing his best because he doesn't want to bother creating 3D models. If the weight of top secret fighter jets could be figured out like this, or if, even more amusingly, the fuel capacity could be determined to the gallon like this, there's no point in keeping anything classified. They might as well keep everyone updated on the exact numbers each step of the way LOL.and with this Brother, lets let it rest, obviously the other team is just toying with us? and has no real desire for the honest weight of the J-20,, and with one final point,,, those canards are very large, and they are "full thow" with what appears to be 180 of travel, pitch positive to negative, there has to be a massively strong underlying architecture to support the weight and massive airloads in the far forward fuselage,,, that's why the center of gravity is actually fairly normal!
the J-20 is a beautifully designed, well balanced aircraft, my compliments and admiration for Dr. Song and his design team once again!
and for you guys wishing for a 15 tonne J-20,,,, Happy New Year!, yes it will be upon us very soon, and perhaps Chengdu will gift us with 3 or 4 more J-20 in the early new year, maybe 7 or 8 by late summer and 11or 12 by this time next year!
excellent points Master Trident, and welcome to SDF!
PS. It's not rocket science because it's harder than rocket science. Rockets were invented decades before 5th gen stealth fighters and today many countries with space programs cannot create stealth fighters. That you don't even comprehend how complicated the question is really highlights how little of a chance there is that you could answer it properly.