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
A broken-system RPG where influence manipulation and prestige class chaining produce dominant power spikes.

Optimization · Pure Optimization
Mastering interlocking social engineering and tech-tree systems on a programmable alien world.
Knights of the Old Republic II: The Sith Lords leans Optimization (Pure Optimization); Sid Meier's Alpha Centauri 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.
Knights of the Old Republic II: The Sith Lords
Pseudo-turn-based d20 system makes twitch irrelevant throughout
Sid Meier's Alpha Centauri
Turn-based; no twitch element at all
Sid Meier's Alpha Centauri leans a little harder on reads, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Influence system uses scripted dialogue triggers, no adaptive opponent
Sid Meier's Alpha Centauri
AI faction leaders follow fixed personality scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Knights of the Old Republic II: The Sith Lords
Influence thresholds and hidden stat distributions create first-play unknowns
Sid Meier's Alpha Centauri
Xenofungus and psi combat add some irreducible randomness
Sid Meier's Alpha Centauri leans a little harder on optimization, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Prestige class chaining and influence-stat transfer create near-broken optimization ceilings
Sid Meier's Alpha Centauri
Tech tree, social engineering, and base placement are essentially 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.
full breakdown
Knights of the Old Republic II: The Sith Lords →
full breakdown
Sid Meier's Alpha Centauri →