Justice
Dangerous Idiot
I personally think Guardiola has stiffled Bayern with his negative tactics, they used to be a joy to watch under Jupp H.Also, Guardiola was a defensive midfielder, he's done OK in management
Not to mention the manager of the England WC 1966 team, Sir Alf Ramsey, was a defender.
If we want to stereotype, one could say strikers players/managers are attack minded by strategically and defensively naive and simply concede too many goals.
Personally, I don't think it matters, a good manager is a good manager whatever their playing position was.