Originally Posted by Xondoure
@lord_khaine: The entire Sabertooth guild stood there laughing while Lucy was being tortured. Natsu's rage was on another level entirely from Sting's motivation of "I wanna be the very best, like no one ever was" even if it was for his friend.
He didn't look or act at all like he was channeling that rage, though. Heck, even when he defeated Gajeel with his Ultimate Summoning Technique: Minecart Madness*, he had his standard attitude of overconfident silly smileness.
Had Natsu been looking like he did before, ready to be out for blood and with no one to get in his way, -all- of his actions would have been justified. Not a single person would have complained about him curbstomping both of them if he had acted -that- pissed off. I'd bet on that.