Which tank can actually tank ?
I just played mao jungle in flex q (xd), I had cinderhulk - randuins - deadmans. Caitlyn came with
and crits and I died.. I mean, I could just as well build full dmg, I'd actually do something before I died then..
I just played mao jungle in flex q (xd), I had cinderhulk - randuins - deadmans. Caitlyn came with
and crits and I died.. I mean, I could just as well build full dmg, I'd actually do something before I died then..
Sejuani
Match history link?
If you don't mind.
https://eune.op.gg/summoner/userName=tough+noogies
Took me 15 seconds to find.
I can see why she would kill you so fast. She was really fed, had 50% crit chance with Runaan's and Infinity Edge, and Blade of the Ruined King and Berzerker's Greaves for attack speed.
Yeah, this had little to do with your tankiness. Also, Randuin's is overrated. Don't buy it next time unless they have at least 3 crit-based champions.
and
come to mind as tanks who have well above average durability, certainly all higher than Maokai.
is also good VS AA heavy comps too.
Maokai also probably should build a lot of damage right now, his E gets pretty absurd with it. The mid season tank update was more of a "tank update" TBH.
Maokai, the burly mage!
Honestly they can make him an AP bruiser now.
He's like old Galio but more interesting.
I... GOD DAMN... CALLED IT!
Well, they've made him into an AP support.
Progress?
Who knows anymore? Hopefully this doesn't turn out like Malz where they nerf his support power without compensating the power in other lanes.
Poppy can stil tank more or less. So can Sion once he grabs a Steraks (its really good on him).
is the only tank left with a reliable damage reduction that is not based on armor that it's like you don't have anyway.
And
of course, but up to you if want to try taking them top/jungle...
You forgot 
Everyone who gets ahead - that's kinda how Tanks work in League - If you're somewhat behind you'll always feel squishy no matter who you are or what you build - if you get ahead you'll always feel tanky if you get somewhat Tank-related Items.
Well, if you are simply looking for characters who are reliably hard to kill look no further than...

All of these champions are usually really hard to kill due to either a ton of pre-mitigation or intense healing. Tanks who don't have extremely intense pre-mitigation or some extremely good, constant healing are going to fall like rocks without backup from the team.