Suggestions by @tournamentcombatfighting

Anthony Hopkins

as Alfred Pennyworth in 90s DC Extended Universe

Score: +2

James Gandolfini

as Penguin in 90s DC Extended Universe

Score: +3

Arnold Vosloo

as Black Adam in Justice League 1990s

Score: +2

Brad Pitt

as Booster Gold in James Gunn's DC Cinematic Universe

Score: -5

Mark Wahlberg

as Batman in James Gunn's DC Cinematic Universe

Score: -26

Eminem

as Leonard Snart in The Flash: Fastest Man Alive

Score: +1

Eminem

as Captain Cold in Gunn's DCU

Score: -1