Doesn't seem to me he implied in any way that super armor qualifies a ninja as a tank, infact he mentioned kimimaro (that doesn't own superarmor), gaara shippuuden and han, he didn't say ay or sasuke susanoo, he specifically talked about 3 real tanks one of them didn't even own super armor.

What qualifies a tank is not at all a stacking defense/resistance buff, but how much he is able to endure hits in every moment, also round 1 and 2, if equipped with the same equip another ninja c*e and roshi's basic stats, you can say what you want, qualify him as a dps, not as a tank. Roshi have relatively poor hp and comparable atk and ninjutsu with resistance and defense by default, how can you consider him a tank if even after 5 hits endured still owns less defense in comparison with a true tank like han or gaara normal and after he is mooded for hp owns 4-5k less hp than them?

For right setups he didn't mean 1 single only setup that requires one pay to win ninja, but a variety of setups. Roshi as a 'tank' survives ONLY if you mooded him for hp, put him in a +hp tactics square and if you run azure fang and hokage tsunade since, after all the shields removal ninjas we gained, he doesn't anymore survive in the immortal lineup with earth main if is in front row, on par power, if he is targeted directly, but who knows why han survives, even if for you he isn't a tank.

With your idea of tanks then han is not a tank, even if owns an evasion passive, a mystery that removes a ton of damage buff and super armor because don't own stacking defense or resistance, nor you seem to consider gaara one even if his basic hp, resistance and defense are high and he self gives shields every round.

And no roshi doesn't survive in any 'right' setup except the one i said or in han roshi azure fang sailor sakura one, where han that's a real tank endures half of his hits and reduces the damage output of the enemy, unless is behind another ninja or clone. So how can he be a tank if without a ton of shields he dies if he is comboed or hit in round 1 by almost only pure ninjutsu effects?

Or are you telling me that a roshi on front row targeted with masked man mystery in round 1 against the itachi susanoo, masked man, onoki, sb lineup survives if get hit also by itachi twice? because han survives.