In what particular way? Seeing as both the Orioles and the Giants both employ black and orange as their team colors, I don't see how the banner gives off more of an Orioles than Giants feel. The BART (Bay Area Rapid Transit) trains are a rail transportation system that serves the Bay Area region. Then the Bay Bridge is there, which connects SF and Oakland.
Maybe if Cal Ripken and the Washington Monument were on the banner, then yeah, I'd see how it would give off more of an Orioles feel.