Originally Posted by
Unregistered
Strictly speaking, that requirement is implied for stinger, because stinger is described as 'zokusei kyarakuta no kyuusho kougeki kakuritsu UP'. Zokusei kyarakuta is just the 'character of X element' part we see in every weapon skill. Kakuritsu's probability. 'kyuusho kougeki' is what we also see in abilities we refer to as crits, like Asherah's.