I dunno, as a data nerd, I think those are interesting questions. By "doing better" I would assume that's profitability. Obviously a AAA store would have higher total sales than a ULV store, but balanced against shrink, payroll, basket size, and whatever other metrics Spot might use to determine store health, a ULV store might be considered healthier than a larger store.
Not sure what newhope's angle is, but it sounds kinda like someone doing research for a college or business school project. I guess he could be a deep state Walmart corporate employee or something, but I'm not sure if that info provides much competitive intel.