Dice games are just too random. It’s true that games do tend to average out and board games need a simplified method of calculation for resolving battles. Computer games on the other hand can afford to be much more complex in terms of calculations to resolve battles. This is why a game like Company of Heroes is far superior to computer games that just import board game rules (e.g Gleemax's Axis and Allies). Game designers need to be more creative than just importing existing rules; they need to invent new ones.