(I've only watched a bit of Hades so I don't know all the details)
Both games have more in common with God of War than Torchlight / Diablo, they are both best with joypad and have direct control of the guy. But they have roguelike-style runs in the region of an hour a time, with permadeath and some meta progression in between runs. Hades has an overworld with characters to talk to and do quests for, which unlocks more content and progresses the story as you complete runs. Curse has a more basic system of collecting unlock currency to unlock the 3 chapters and buffs to start a run with.
Both are more indie in feel rather than AAA, but Hades is way ahead on looks with beautiful 2d artwork and a great deal more content. Curse is a bit more modest on looks and content but I think the combat system is fantastic as I said, and it's a lighter game that's easy to just pick up and play when you feel like it.