Absolutely not. The Oneworld rules (and contractual agreement by airlines when joining Oneworld) is not ambiguous. Non-native Emeralds get access to the F lounge, Sapphires to the J lounge. Any other lounges that an airline might operate are not part of the agreement. So JL can create an F lounge for OW Emeralds and rename its real F lounges so that they are not covered by the agreement (the BA solution). BTW BA does allow status-based access to the Concorde Room: BA Premier flying any class on any airline, and QF Platinum flying F on QF ex-LHR. I think an F ticket on QF without WP gets F lounge access and not Concorde Room at LHR (doesn't apply to JFK).