Wendel always made a point of telling me when we met at shows the best he ever heard the MG20.1s was with our MA-2s (that was about 20 years ago). He pretty well ran the company so you can draw your own conclusions. My point though is that when you see odd seemingly arbitrary comparisons like this, they have almost no meaning at all.
'Best' is a tricky thing in audio and most will tell you there is no 'best'.