This is a turn based game on hard it should be like chess. You should have a legit chance of losing many battles if not played right. If there was an unstoppable move that would always allow you to win in Chess in 4 moves, the game wouldn't have survived the centuries it has.
Chess and D:OS are very different games. The former is a proper strategy game, and the latter is an RPG, and as an RPG, the game world, characters, storyline, etc deserve just as much (if not more) developer time as the combat system might. I think the "the game shouldn't be easy on hard" statement assumes that since D:OS has turned based combat that it's trying to be some ultimate strategy game, and I don't think that is its goal. Therefore, it would be nice if it had a range of difficulty, but it doesn't necessary have to be that way.
