Of course any photo of a stubbly Quinto is going to amplify the differences. The comparison images still aren't being chosen fairly. And even so, the similarities in coloring, bone structure, and the shape of the nose, mouth, and ears are quite clear to me.
And nobody's saying they look exactly alike, of course. The point is that, of all the new cast members, Quinto bears the closest resemblance to the original. I'd say Yelchin is the second-closest. Urban and Pine are moderately similar to the originals, but they have the wrong eye colors, and Pine really only resembles Shatner in profile. Saldana and Cho bear only vague resemblances and Pegg and Greenwood aren't even in the ballpark.