on PBE right now a full Ornn combo deals 73% max hp damage

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See I’d much rather deal with that then random people in chat yelling at me and threatening to report me in all chat if I don’t go into the voice chat.

See, I’d rather my tanks have poor winrates than have more damage at the cost of tank aspects. I don’t care about voice chat, but we don’t need more damage.

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If you could find where "Ornn" was classified as a Vanguard by Riot i would agree.

Side note ever Warden and Vanguard has a defensive steroid. If Ornn loses his shield on his W he would be the only one that didn't. Would be an odd thing for a "tank" too not have.

Multiple Juggernauts have extremely weak defensive steroids though

Why did you put his name in quotes? That’s...what it is and how it’s spelled.

Ok. From the champion reveal page:

Ornn is a leader on the battlefield. He initiates fights on his terms with Call of the Forge God, then charges in, bellowing and tearing apart his foes with titanic force. https://na.leagueoflegends.com/en/featured/champion-reveal-ornn

Description of a Vanguard. Not enough? From the “Forging Ornn” article:

Since Ornn is League’s first blacksmith champion, there were a lot of ways to approach his gameplay design. In other games, blacksmiths are often NPCs who only exist to supply the main character on their journey. Ornn was never intended to be a part of the supporting cast, in either meaning of the word. “We didn’t want to make a champion who focused on making weapons that buffed their allies,” says game designer Blake “Squad5” Smith. “Ornn was meant to be a powerful vanguard who could hold his own.” https://nexus.leagueoflegends.com/en-us/2017/08/champ-insights-ornn/

Or...how about from when he was teased in the Champion Roadmap in July 2017:

The same can be said for the Tank update; as we honed in on what we felt worked for the Vanguard class, we saw a great opportunity to build a new Vanguard from scratch.

One of the key traits of a Vanguard is that they can choose when and where to start a fight. With that in mind, we wanted to make a new playmaking Vanguard that charged headfirst into tough situations and made the enemy team fight on their terms. We also really wanted to make a very self-reliant champion; expect to see a unique new passive that helps them build more than just character.

Look out for the newest Vanguard, who’ll be heating up one of the coldest regions in Runeterra. Next, let’s look at the updates we have in flight. https://nexus.leagueoflegends.com/en-us/2017/07/champion-roadmap-july-2017/

How’s that?

Edit: since I never addressed your other point: just because Ornn has a harder time landing his CC doesn’t make him less of a tank. Galio is a tank, and both his CCs can be tough to land. Sejuani is a tank and needs 4 melee hits before she can CC one person outside ult. Sion’s considered a tank and his CC is some of the most dodgable skills. Just because Ornn’s 2 Displacements are tough to land doesn’t make him less of a tank. Displacements are some of the strongest short term CC in the game at the moment, and he also carries the Brittle debuff, which debuffs are another element tanks have (not exclusively, but still). He was released as a Vanguard (and possibly an ideal one based on Riot’s and community standards...or at least Riot’s original ones, and in my mind), he has always been a Vanguard, and without the shield he’s still one, just a bit squishier and being shifted more toward damage like a fighter, him and Sejuani, unfortunately.

Give me one juggernaut, just one outside of the champ we're debating who has the CC profile of a tank. 3-5 CC spells, often aoe, at least one of which, if not more is hard CC.

I can pick all but 3 tanks who match this description, but they've been given different tools to do their jobs (these are shen, taric and rammus. Who have different tools to achieve their roll).

So. One juggernaut if you will. So there's no mix up, these are juggernauts Their common traits: they sacrifice powerful aoe cc and mobility for damage and durability. No strong, instant gapclosers. No aoe hard CC. But crap loads of damage and can be beefy af.

So which one of them has a kit identical in CC might to nautilus? Leona? Ornn? Urgot comes close but is immobile af, deals significantly more damage and is mostly single target CC

Forging Ornn article. Linked below by Iota.