The new line of Runco uses the Pioneer Elite as their base, not the Panasonic. Though mentioned that the Runco will be 90% of the stock Panasonic, well, that would be subjective.
Now if you want to say a stock Runco to the other manufacturers, surely there is a gap, probably 10%, if measurable, but throw in the scaler Runco does, and the gap widens 3 fold.
Owner, 50HDX.
Dan