User blog comment:OceanSushi/A Mini Research on the Optimal Maruyu Batch Size/@comment-26154973-20160224100353/@comment-26486243-20160225181732

What Kaga said. There's still a difference in the standard variation, but the mean value over the long term would be the same.

That said, another rather important factor not yet mentioned is the number of remaining ship slots. Sometimes you don't have enough slots to hold multiple maruyu kai, especially in event season when maruyus drop. The ability to continue sortieing on event maps should not be compromised for a standard deviation factor.