Bob, I've been doing this a long time and I know there's a few HP to be had in oil but NOT when comparing like type and viscosities.
That said, I disagee with your claim, that "there are many S/SS motors with hundreds of runs on them" at least not in a single season
. FYI, I have many friends that race stock and super stock and not one of them is putting hundreds of passes on their engine before freshening.