nowhere near that of j16, especially taking off from carrier.
There is NO WAY the J-16 will take off from the Carrier with a nickles worth of difference, as they are essentially the same airframe, how many times does the brat have to say???? "A Flanker, is a Flanker, is a Flanker"??????? Like an N Frame Smith and Wesson, they change a few engineering specs, and they build a .357, 44 Special, 45ACP, 45Colt, or 44Magnum, all that matters is moving a little metal here or there, and changing the size of the holes in the cylinder... The Naval J-15 has less "useful load" because it is "beefed up" to operate off the carrier, you don't have to be a design engineer to understand that gentlemen, the Chinese Flankers even have the same "STOOPID" green hubcabs that Sukhoi uses, for cryin out loud. The J-16 will be for the PLAAF. If they want the J-15 to carry more ordinance, all they have to do is beef up the spars, increase the thickness of the wing skins and add a few hardpoints and electronics, a little more thrust, and I have just "engineered" the JA-15S, how about that gang????? and that's exactly what Shenyang did to "create" the J-16 from the J-11B...sorry Schumacher, but this isn't rocket science, its first grade physics...the inevitable wrapped up in the obvious, and don't start on composites and plastics and add infinitum.
Oh, and the J-15 has canards which do increase lift! The J-16 does not??? at least at present.