Too hard with 2, too easy with 3

Got the base game about a week ago (more on the way!) and I love the game but its SO hard with 2 gearlocks (play on hardest difficulty) getting one shot or not getting a turn or coming up on some unwinnable situations

So I played with 3 and breezed through the whole game (hardest difficulty) didnt really have any threat of dying and killed the goblin king in one round with boomer. Fun, but kind of a let down.

Whats everyone elses take on game balance?