@TA07 I read it as the other way around, I thought that V is still getting used to Baam's body, so he's not as strong as he was in his prime. As for if V would be able to kill them assuming he's strong enough, it's unclear, since we don't know the full details of the immortality contract the great warriors are subject to. First, since V didn't agree to become immortal he may be considered an exception to it and even if he wasn't originally an exception, V's in Baam's body now, so he may now be considered an except. (Kinda like how back during the workshop Karaka wanted to turn Baam into an ignition weapon that was exempt from the tower's rules, even if the wielder was not.)