You sure you not beta as fuck?
The one that needs help is you lol. Its obvious Vergo reminds you of some bully or something, idk why he bothers you so much
Fact is if Oda has plans for Vergo, its better to show him later when we get to see such fun things as Law tanking adCoC with his normal guard, Sanji bending King's beak with his haki, BM screaming her lungs out from a less potent countershock and Vergo wasnt even down from that, etc.
Thats pretty fun, Vergo KOd him cold. And I know you gonna say that about the heart, but you dont get knocked out cold for that lol which Law was from a simple "not named" pretty simple hit
Anyways, why am I talking to you? You are a brainlet that thinks Vergo used his left leg. That makes you a fucking moron
NO it just means the raidsuit the raidsuit is tough in and of itself. Only the cape is said t be any protective
the rest of the suit is just clothes. Clothes that is very resistant (Sanji tested how resitant against P1) but doesnt mean they lend durability to the user. Otherwise Sanji wouldn't have expressed it this way
So no, the RS didnt protect him from King. He used hardening to harden his torso. Sanji and King clashed whihc produced a metallic sound, this means both used haki. Simple