Looking at the Japanese...

Ｄ31 隔205 ステップ命中率&性能アップ
ピリッククレオス
アフターマス:命中+/攻+/時々2回攻撃
Lv75～ 踊
It's "[Steps Accuracy&Properties Up] V", it sounds like "Steps Accuracy&Properties Up" is one stat put to the fifth degree. If accuracy is indeed affected by the rank, then the current description would be correct, or so I think.

Yagrush, on the other hand, doesn't have the two stats grouped:
女神の慈悲性能アップ
ディバインベニゾン効果アップIII