No, every ANOVA test I've seen in this forum has been worthless. There are a dozen control variables that are all over the place. Obviously no one has the same engine, climate, OCI, driving style... it's impossible.
But to make matters even worse, the results of a UOA don't directly correlate with the wear on an engine because they only extremely fine particles. Anything large enough to catch in a filter won't show up in a UOA.
As to PYB vs Valvoline, the Valvoline VOA's always look bland. But it always performs well. I've never seen UOA's that would push me one way or another. I have seen sales/rebates that have, though.