B757 CREW RECEIVE CONFUSING INSTRUCTIONS FROM PHX APCH CTLR WHILE DSNDING FOR A LNDG.

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ON APCH TO AN 'EXPECTED' VISUAL TO RWY 25L AT PHX; THE CTLR GAVE US A DSCNT FROM 7000 FT TO 4000 FT AND A VECTOR TO 350 DEGS. HE ASKED IF WE HAD TFC ON APCH TO RWY 25L. WE REPLIED NEGATIVE. HE THEN ASKED IF WE HAD AIRBUS TFC AT OUR 1 O'CLOCK POS ON APCH TO RWY 26. WE REPLIED AFFIRMATIVE. HE PAUSED; THEN SAID TO KEEP SEPARATION FROM THAT TFC. AT THIS POINT; WE BOTH WONDERED HOW WE WERE GOING TO MAINTAIN SEPARATION WHEN WE HAD NO CLRNC TO DEVIATE FROM OUR ASSIGNED HDG. MEANWHILE; WE WERE CLOSING QUICKLY ON THE LOC RWY 25L ON A 90 DEG INTERCEPT. AS WE OBSERVED OUR ACFT GO THROUGH THE LOC; THE CAPT (PF) BEGAN A HARD L TURN TO AVOID TFC AND MAINTAINED ALT. WHILE WE WERE TURNING; THE CTLR CLRED US FOR A VISUAL APCH TO RWY 25L. AT THIS POINT THE FO (PNF) CONFIRMED WE WERE CLR OF THE TFC AND ACCEPTED THE CLRNC FOR A VISUAL TO RWY 25L. THIS WAS FOLLOWED BY A NORMAL LNDG TO RWY 25L. AFTER LNDG WE CALLED BOTH PHX TWR SUPVR AND THE TRACON SUPVR WHO BOTH ACKNOWLEDGED PROBS WITH HOW OUR ACFT WAS HANDLED.