There is a big difference between a starch coating and a flour coating; they differ in oil absorbency after deep frying and texture; pouring hot dashi-based sauce on the starch coating one and leaving it for a while make the sauce become moderately thick.
片栗粉と小麦粉の衣の大きな差として、揚げたあとの油切れ、衣の食感、また片栗粉の場合、熱いだし汁をかけ少し時間を置くとつゆに適度なとろみが出る等違いがある。