I thought so too until, I read about a bug.
It may very well be, that hard mode is too easy, because of a stats bug on your characters. There is a bug, where stats from items or abilities stack permanently. After reading about this, I checked my Eder for example, and saw that he has 90+ in all defensive stats (deflection,reflex,fortitude,will). So I hope a patch comes and, that can fix those bugs retroactively. I think after that, hard mode will be a lot more challenging. Because currently my tank is nearly invincible.