head to head
Diablo III asks more than Knights of the Old Republic, and the gap is execution.

Optimization · Pure Optimization
A pure loot-and-build treadmill where set-bonus optimisation and Rift pushing define performance.

Optimization · Pure Optimization
A d20 Star Wars RPG where Force power selection and alignment routing define clear optimal paths.
Diablo III leans Optimization (Pure Optimization); Knights of the Old Republic leans Optimization (Pure Optimization).
Diablo III leans clearly harder on execution.
Diablo III
Greater Rift pushing has minor mechanical demand in builds
Knights of the Old Republic
Pseudo-turn-based d20 combat removes all twitch; timing aids exist but minor
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo III
No meaningful adaptive opponent; co-op is cooperative
Knights of the Old Republic
All enemies follow scripted AI behaviour trees without player modelling
Diablo III leans a little harder on variance, though the gap is small.
Diablo III
Primal Ancient drops and set dungeon RNG drive the grind
Knights of the Old Republic
Loot rolls and pazaak draws provide hidden information layers
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo III
Set bonuses and paragon levelling are almost entirely solvable
Knights of the Old Republic
Force power selection, feat prerequisites and light/dark routing are systematically 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.