I don't think, for me anyway, that you've demonstrated that they are out of whack. You seem to agree that an 80 run differential is reasonable. That means, to me, within the margin of error of measurement. That also means that you should, knowing how stats work, be willing to accept that there will be outliers, and those outliers will be extreme by their nature, leading to numbers of around .75 runs per game or so (no idea what that standard deviation is.....not all that interested in looking).