MLG CONCERNED ABOUT WAKE TURB FROM 757 MAINTAINS SPD AND SIDE STEPS EARLY.

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DSNDING TO 6000 FT ON THE BIG SUR 1 ARR; I SAW ACFT LIGHTS ABOUT 10 MI TO THE R AND TOLD THE COPLT; 'LOOKS LIKE ANOTHER JOIN-UP IN THE MAKING.' WE RPTED THE FIELD IN SIGHT AND WERE CLRED FOR THE TIPP-TOE VISUAL TO RWY 28. APCH THEN ASKED THE TFC FOR THE R IF HE HAD US IN SIGHT; AND HE SAID; 'AFFIRMATIVE.' HE WAS CLRED FOR THE RWY 28R VISUAL. APCH ASKED US IF WE HAD THE TFC FOR THE R IN SIGHT AND I SAID 'I SEE SOME LIGHTS. WHAT TYPE?' APCH SAID; 'A 757.' I SAID; 'I DON'T WANT TO BE BEHIND HIM.' APCH REPLIED; 'YOU'LL BE AHEAD OF HIM BECAUSE YOU ARE DOING ALMOST 100 KTS FASTER OVER THE GND.' THIS STATEMENT WAS LUDICROUS. I WAS DOING 250 KTS AND THE 757 WAS ON A CONSTANT BEARING. I TURNED L 2 MI EARLY TO INTERCEPT THE RWY 28L LOC BECAUSE I SAW A DANGEROUS SIT EVOLVING. I MAINTAINED 250 KTS UNTIL THE SAN MATEO BRIDGE; INTERCEPTED THE LOC AND THE GS (1 DOT HIGH); THREW OUT THE GEAR AND FLAPS; AND COMMENCED A RAPID DECELERATION TO APCH SPD (139 KTS AT 15 DEG FLAPS). A HVY ACFT WAS JUST TOUCHING DOWN ON RWY 28R AND THE WIND WAS 310 DEGS AT 17 KTS. I INTENDED TO GAR IF THE 757 WAS ABOUT TO PASS ME. I LANDED LONG WITH A LITTLE EXTRA SPD. EITHER THE CTLRS ARE UNABLE TO PROVIDE ADEQUATE SEPARATION WITHOUT EXCESSIVE PLT MANEUVERING/ASSISTANCE; OR THEY ARE STRIVING FOR 'JOIN-UPS.' THE MIX OF HVY; LARGE; SMALL; AND THE B757 INTO A FIELD WHERE THE RWY CTRLINES ARE ONLY 750 FT APART IS COURTING DISASTER IN THE INTEREST OF CAPACITY ENHANCEMENT.