FOREIGN WDB ACFT OVERSHOT TURN ONTO FINAL APCH TO RWY 28L AND HAD NMAC WITH SMT ON FINAL TO RWY 28R.

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WAS CLRED FOR QUIET BRIDGE APCH TO 28R AT SFO. AT APPROX 13 DME; ATC CALLED OUT TFC AT OUR 10 O'CLOCK. A WDB Y ON L BASE FOR 28L. WE CALLED THE WDB Y IN SIGHT AND WAS TOLD TO MAINTAIN VISUAL SEPARATION. FROM THE POS OF THE WDB Y; I COULD TELL HE WAS GOING TO ROLL OUT ON FINAL SIDE BY SIDE WITH US. AS THE WDB Y GOT CLOSER; IT BECAME APPARENT THAT HE WASN'T GOING TO TURN ONTO FINAL; BUT STAY ON HIS CURRENT HDG AND DSNDING RIGHT AT US. BEFORE WE COULD CALL ATC; THEY CALLED WDB Y TO CONFIRM HE WAS TURNING ONTO FINAL AND THAT HE HAD US IN SIGHT. IN BROKEN ENGLISH THE RESPONSE WAS NEGATIVE. AT THAT POINT WE INITIATED A DIVING L TURN AS AN EVASIVE MANEUVER TO AVOID THE WDB Y WAKE TURB. ATC THEN CALLED US AND TOLD US TO MOVE OVER TO 28L AND MAKE A VISUAL APCH TO 28L. ATC THEN CLRED WDB Y FOR A VISUAL TO 28R. MY GUESS IS THAT WDB Y PASSED OVER US DURING OUR EVASIVE ACTION BY ABOUT 300-400 FT AND OVER SHOT BOTH RWYS BY OVER HALF A MI. WE THEN MADE A NORMAL APCH AND LNDG TO 28L. I FEEL THAT SOME OF THE CONTRIBUTING FACTORS TO THIS INCIDENT WERE LANGUAGE COM PROBLEMS BTWN WDB Y AND ATC; AND WDB Y LACK OF UNDERSTANDING THE UNIQUE PARALLEL APCH PROC FOR RWYS 28 AT SFO. IT'S APPARENT THE WDB Y DIDN'T UNDERSTAND THE VISUAL APCH CLRNC ISSUED TO HIM OR HE DIDN'T REALIZE HOW IMPORTANT IT IS NOT TO OVERSHOOT YOUR RWY ON FINAL. ANOTHER PROBLEM WAS HAVING A HVY ACFT LINE UP SIDE BY SIDE WITH SMALLER ACFT. I UNDERSTAND THAT IS AGAINST THE OP PROCS FOR VISUALS TO THE 28'S. I FEEL THE PROBLEM MIGHT HAVE BEEN ELIMINATED BY AT THE LEAST VECTORING THE WDB BEHIND US OR EVEN BETTER IS TO HAVE HIM DO THE CHARTED TIP TOE VISUAL TO 28L. I FEEL THAT ALL FOREIGN CARRIERS SHOULD BE REQUIRED TO EXECUTE THE CHARTED VISUAL APCHS SINCE THEY MAY NOT OPERATE OFTEN ENOUGH OUT OF SFO TO BE FAMILIAR WITH IT'S OP AND TO HELP INSURE UNDERSTANDING ABOUT THE PROCS.