Clarity is actually one of the areas that the b2 are better than the s12, but the latter are no slouch either. And I think treble detail is pretty close between them. Detail in the mids is definitely better w/ the b2, but the mids are less recessed w/ the b2, so that would be expected. The s12 has a more v-shaped or u-shaped fr, and the b2 is more neutral. But to my ears, the bass response on the s12 is better both qualitatively and quantitatively. Faster, punchier, and more detailand better texture. Your call.