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 · Practiced Mastery
A punishing Soviet off-road logging sim about dragging timber through near-impassable mud.

Optimization · Pure Optimization
Side-on turn-based tactics where you manually aim ricocheting bullets for a steambot pirate crew.
MudRunner leans Optimization (Practiced Mastery); SteamWorld Heist leans Optimization (Pure Optimization).
MudRunner leans a little harder on execution, though the gap is small.
MudRunner
Careful throttle, diff-lock and winch control matter constantly.
SteamWorld Heist
Manual aim and ricochet shots reward steady hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
MudRunner
No opponent of any kind.
SteamWorld Heist
Enemy bots follow fixed behaviors
SteamWorld Heist leans a little harder on variance, though the gap is small.
MudRunner
Deforming mud behaves unpredictably until mapped.
SteamWorld Heist
Procedural ship layouts and loot drops
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
MudRunner
Fuel, load and route planning across the map is the core test.
SteamWorld Heist
Crew builds, weapon picks, and turn routing carry runs
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.