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Fair enough, but I maintain my assertion. To rephrase and clarify: so far, every time I used any labelled Escher on a good edge obtained with a Coticule, I thought the edge improved.

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Fair enough, but I maintain my assertion. To rephrase and clarify: I have not used any Coticule that produced edges which I could not improve using any of my labelled Eschers.

You aren't; it isn't: it's an MST Thuringian.

As for the rest: it's nonsense too. Or, to formulate a bit more cautious if not more friendly: I haven't used a Coticule that was up to par with any...