head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Loot-driven sequel sending Death through sprawling dungeons to clear War's name.

Execution · Practiced Mastery
Quake-powered dark-fantasy FPS continuing Hexen's puzzle-hub crusade across four worlds.
Darksiders II leans Execution (Practiced Mastery); Hexen II leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders II
faster combo combat as Death
Hexen II
Quake-engine combat and movement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders II
no adaptive opponent
Hexen II
Scripted enemy AI
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders II
loot drops add light randomness
Hexen II
Obscure puzzle triggers feel hidden first run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders II
skill trees and dungeon puzzles reward planning
Hexen II
Hub puzzles, class builds, and route knowledge
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.