In a very recent question: "Más me gusta X entonces Y" construction, a comparison with the following structure is used:
Más me gusta X a Y.
Until now, I've only seen "a" used in comparisons (though it is debatable if the following is a comparison at all) with the verb "preferir":
Prefiero X a Y.
However, for "más" / "menos" comparisons, "que" is the only preposition that applies, as far as I know:
Me gusta más X que Y.
Corre menos Z que W.
Even if the verb is placed in between:
Más me gusta X que Y.
Menos corre Z que W.
After taking a quick look at both the DPD article for "a" and its DLE definition, I didn't see any examples of the usage of "a" as an equivalent of "que" in comparisons like the ones above.
Is it correct to use "a" in place of "que" in comparisons with "más" / "menos"?