head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
The genre-defining loot ARPG whose builds, runes, and trade economy players still optimize decades later.

Optimization · Pure Optimization
A turn-based RPG where relic substat variance and speed-tuned team optimisation define endgame performance.
Diablo II leans Optimization (Pure Optimization); Honkai: Star Rail leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo II
Positioning and potion reflexes, little else physical
Honkai: Star Rail
Turn-based; physical input precision is essentially irrelevant
Honkai: Star Rail leans a little harder on reads, though the gap is small.
Diablo II
Monster AI is fully mappable
Honkai: Star Rail
PvE only with scripted enemy behaviour throughout
Diablo II leans a little harder on variance, though the gap is small.
Diablo II
Loot RNG and random maps drive the grind
Honkai: Star Rail
Relic substat RNG and gacha pulls drive character progression
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo II
Builds, breakpoints, rune economy, magic-find routing are the game
Honkai: Star Rail
Speed tuning, team cycle theory, and buff windows are deeply solvable
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.