Okay is it just me or did some of them change?

I remember the first time getting Karin. Her skill attacked max of 3 enemies. Now it says Ranged attack to enemy significantly, and keep restoring players hp.

Dia is even worse. I remember her skill attacked multiple enemies(more than 3). Now it says. Ranged attack to enemy significantly, and reduce their defense in a short period of time.

Can anyone explain this?