head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, 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 · Systems & Chaos
A card-stacking village-builder roguelite where efficient resource chain optimisation against draw randomness is the test.
Diablo II leans Optimization (Pure Optimization); Stacklands leans Optimization (Systems & Chaos).
Diablo II leans a little harder on execution, though the gap is small.
Diablo II
Positioning and potion reflexes, little else physical
Stacklands
Card dragging in real time has minimal precision demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo II
Monster AI is fully mappable
Stacklands
Enemies and events are scripted; no adaptive adversary
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo II
Loot RNG and random maps drive the grind
Stacklands
Card pack draws control which resource chains become available
Diablo II leans a little harder on optimization, though the gap is small.
Diablo II
Builds, breakpoints, rune economy, magic-find routing are the game
Stacklands
Resource chain optimisation and stacking sequences form the deep game
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.