User blog comment:Homuhomu123/Shelling Accuracy Test Results/@comment-11780006-20150506055549

If those formulae are accurate, then sparkling is pretty much CRUCIAL on moderately difficult maps like event maps..

(if you give a shit about resources.. timewise pretty sure not sparkling will almost always be faster)

Put together a bit of math based on the provided formula in my blog: http://kancolle.wikia.com/wiki/User_blog:Faeriedust/On_the_importance_of_sparkling