IMO the two are equal. There might be a little more bait off the GSC on the ebb (preferred tide). With gas prices, I'd probably stick to SW or Dolphin Pt. The only advantage I can see would be starting at the GSC or Point Richmond and working your way north fishing the Cable Crossing along the way.
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter