Don't know if this is the right place for this, but the San Marino map has a Pearl harbour problem. The size of the bonus territories means that often one of the players starts with a bonus and can then either kill the other person's potential bonus (by taking a torri, say) or can extend his bonus easily.
Not sure what the answer is, but maybe by making the bonus territories larger, so that the chances of someone starting with 6 troops is reduced.
Just my thoughts.
The present case almost always leads to the one who goes first, winning.
Are you talking about 1vs1? Because I think in team games, especially triples and quads it's much more difficult to get the bonuses.
The bonuses are easy to attack though once conquered...maybe your game was just bad luck or a bad drop.
However if many think the bonuses are too easy to hold a possible solution could be making the torri regions start with 1 or 2 neutral units on them.
What do other people think? Is this necessary or is the map fine as it is?