I suppose I can't appreciate the difference between a machine doing a d20 roll or a d100 roll. Same for crit rolling, etc. A statistical chance is a statistical chance. If I have an 80% chance of success, doesn't matter whether that's 80/100 or 16/20. Doesn't matter if my success says "success!" or "success (14roll+6hit was better than target's AC of 12)!"