its ridiculous to claim that.
picture is worth a thousand words:
http://forum.keypublishing.co.uk/showpost.php?p=1490170&postcount=65
re-emphasizing that J-11B is equipped with FWS-10 engines,each rated at ~125kN thrust with afterburner(ISA,SLS,uninstalled).
FWS-10A is a modified variant...