Bruno Tilz 211-TS 6 vs Marcinkiewicz CH 13S
The Bruno Tilz 211-TS 6 has a wider cup diameter, the Marcinkiewicz CH 13S has a larger throat opening.
Cup Diameter
The Bruno Tilz 211-TS 6 has a cup diameter of 18.50 mm / 0.7283 in compared to 17.42 mm / 0.6858 in on the Marcinkiewicz CH 13S — a difference of 1.08 mm / 0.0425 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Marcinkiewicz CH 13S has a wider throat (4.70 mm / 0.1850 in vs 4.30 mm / 0.1693 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.