SF Cremona Auditor M as good as Guarneri Memento?

That's a bold statement, but I've read that the Auditor M is sonically very close to the Memento. Any merits to this?

Has anyone heard and compared both? If so, how close - or, how far - are they really?

I have a new pair of Auditor M and can't find any weakness in them. Maybe the lowest bass note is missing but I won't go crazy looking for that octave.

Thanks,
George