I hear you! Like I mention to others in the thread, this functionality is already there, I just need to finish populating all of the data. To get over a mental block I had to decide whether I'd continue trying to add each feature before an initial launch (and be there forever) or give myself a shot of motivation by getting an initial performance comparison feature set out there and iterate as I go along.
As soon as I have all of that data in there (I think I'm at around 30-40% so far, the initial batch of testing has been a slog, data entry for this took a back seat) I'll be enabling that option and it will all be there to view on comparison pages, and search for to help find/compare on a deeper level.