But there is a die you can pick that is uniformly better than any alternative. That die is C. If your opponent is playing correctly, C will give you the optimal outcome. And if your opponent isn't playing correctly, C will also give you the optimal outcome. This is not true of the other two dice.
> If Gates had chosen first, then whichever die he chose, Buffett would have been able to find another die that could beat it (that is, one with more than a 50% chance of winning).
It seems like you're thinking about this outside of the relevant context, which is a math problem, loosely inspired by real life games.
What's optimal about that is that it's the best outcome you can theoretically achieve. That's what "optimal" means.
The counterintuitive part is that the first player cannot win more often than they lose.
Contrast with a scenario where two dice are our normal 1-6 flavor and one die is all 6’s. In that case the all-6 die is stronger because it doesn’t matter which other dies it goes up against.