Well, if a Minotaur has 100% physical attack block, and it constantly defends and doesn't attack, then this will continue for a long time. Example: 1 Minotaur and 1 Dread Knight. The Minotaur cannot attack and block at the same time. And as soon as its attack ends, it will receive a fiery breath attack from the Dread Knight. And the Minotaur will definitely die.
Added after 1 minute
I agree about the health. But if its HP is increased to 100, it will be stronger than a Champion. And a level 3 creature cannot be stronger than a level 4 creature. All of this leads to the conclusion that the Champion is weak.

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!