Much better than diablo IV that's for sure. Get over the fact it's like a kids game, you can actually get killed if you're not careful. In Diablo III and IV you just go in and sweep away mindlessly, no need to dodge.
Sure, Minecraft Dungeons isn't rated M material with blood and gore and all that cool stuff, but the way the game plays and feels is WAAAY better than the other stuff you're going to get out there with hack and slash RPGS. It's quick, simple and to the point.
I'd rather play this than a lot of other games, it's solid.