A mic with 2/3 of the core components of both already exists: ELA M251 with AC701.
What is the take-away here? Here, as with every other condense mic, the capsule dominates the timbre and characteristics, all else being equal.
Or, to be more precise, and based on personal experience: an ELA M251/AC701 still sounds C12-ish.
What throws such academic discussion off, and why these comparisons are only applicable when using the genuine articles: your idea of "good M49 circuit" and "CK12 STYLE capsule". None of the aftermarket stuff comes close enough to warrant further speculation what these combinations would actually sound like: even when using original AC701, no one currently makes CK12, BV11 or T14/1 to original building specs.