Well I was being kind of facetious when naming those two games because they're more like action games with a Diablo-style loot system than actual Diablo clones.
Victor Vran is best described as "Bastion 2" with Diablo-style loot. The levels are hand-crafted, with the exception of a couple end-game dungeons. Like Bastion, every weapon has a technique to their use, whether it be a timing issue or a certain combination of its three moves, to maximize damage output. While it ain't devil may cry, this keeps the combat from devolving into the mind-numbing clickfests of regular diablo clones. You don't have a set class or permanent stats, your costume acts as your "class" and your fate cards (randomly generated loot like weapons) act as passive skills, and they can be switched in or out at will. Every level has 5 optional goals to complete and clearing them all requires frequent reshuffling of stats and equipment. Leveling in this game is more about unlocking gameplay mechanics than boosting stats, and while the enemies scale to your level, they do so by unlocking new powers instead of just boosting their HP and damage output. Like Bastion's "tonics" system, Victor Vran has optional "curses" you can toggle to increase the challenge and also increase the loot drop rate. Finally, like Bastion there is a "voice" that narrates your actions in the game, but it's got a decidedly different personality.
You can safely skip the Motorhead campaign, it's a failed attempt at doing Brutal Legend's humor and the way they bungled the sound design will actually make you start to hate Motorhead as you play. Fortunately the game doesn't shuffle any of the motorhead-themed items into the regular campaign. Unfortunately you shouldn't skip the Motorhead DLC because it includes several regular skills and items that fill some gaping holes in the original release's selection that can do things like make a "mage" build viable, for example.
Shadow Warrior 2 is an FPS in the Painkiller family with random gems you can plug into your weapons, special moves and permanent stats to unlock, and randomly generated levels (populated by LOTS AND LOTS of explosive barrels). Gameplay-wise it's better than Shadow Warrior 1, but the story isn't as good. As an ARPG it's less sophisticated than Victor Vran, but the amulet system does function like class somewhat and you can create a "build" around your chosen amulet as it would take several playthroughs to unlock the entire skill tree (and you can carry a character over from a lower to a higher difficulty ala. Diablo).
Be warned that while you may have 1337 5k331z when it comes to FPS, it's still advisable to start on normal difficulty or you'll find the enemies to be super bullet-spongey against your weak stats and equipment.
Although if you want an actual Diablo-clone, the best is
Din's Legacy.
Two working class dudes, one black one white, just baked a tray of ten cookies together.
An oligarch walks in and grabs nine cookies for himself.
Then he says to the white dude "Watch out for that black dude, he wants a piece of your cookie!"