Reno's potion is enough to snap Johnny out of limit break Berserker mode, and he stops growling and struggling. He comes back to his senses with two Renos holding him back and the taste of a potion in his mouth, so he gets the idea of what happened.

"...Thanks."

He tries to address them both, since he's not sure which one is the real one right now.

But now it seemed like the group was actually starting to win, and that meant he couldn't just hang back now. It was to give everything he had left into two more Amped Strikes.