Attack 20, Defense 3, Strength 4, Knowledge 5. 20+3+4+5=32. I agree, such a hero is better than one with Attack 8, Defense 8, Strength 8, and Knowledge 8, even though the sum is also 32. No one needs such a hero!
In general, I prefer to defeat enemies with brute force, not relying too much on magic, and the creatures of Inferno and Stronghold, led by Demons and Barbarians respectively, are perfectly suited for this! :)