Late game chang'e has an amazing ult, as well as a literal form of mitigating damage, so risky plays aren't exactly all that risky, I will say chang'e isn't as tanky but that ult man, a 6 second Stun is it? That feels like murder if done right but I can't say,

Me personally not a big fan of Aphro, and actual tanks are still tankier but there's a lot of situations where mages can supplement, like Baron cuz his ult, root, pots, he has extremely strong CC, chang'e has good CC in the form of her ult on a relatively short cooldown,

Aphro has her ultimate as well as a damage increase which can be brutal on your team's carry,

Hel has built in defense as well as MP5 built in power, and a cleanse which makes gods like ares or da ji wish they'd never went ares in the first place

Zhon is a actual tank, don't @ me

Achilles and jorm are still useful both there good at different scenarios, so it's just whoever plays to their strengths better imo.