Games with Governor and Minion tend to confuse me too, which is mainly because there are two important cards you usually want to rush, but it's not really clear which one to prefer. Moreover, the usual Governor play somewhat conflicts with the usual Minion approach to not get too much money, which means that even if in a vacuum Minion might be better than Governor (which I don't know), the constant Silver flow will sort of prevent Minion from getting off the ground. So maybe most times Governor > Minion?
And yeah, the Governer +cards effect is nice with Minion, but it's quite rare that you can this really use to your full advantage, because with Minions you want to rush Minions first, and with Governor you don't need any Minions.