Tank passive in kingmaker?

It's not exactly great. Your reward for being the only tank is the move speed and buffed passive (nice) and then the amount of hp you're supposed to have.

Since it's a non role Q mode tank health is reduced. So if you play as the only tank you just get regular hp. So why would you lol, the other passives are flat out better and it's way better to have 2 low health tanks and then a king DPS or supp.