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
A third-person tower defense about funneling orc hordes into gleefully lethal trap corridors.
MudRunner leans Optimization (Practiced Mastery); Orcs Must Die! 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.
Orcs Must Die!
Active shooting supplements the traps
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.
Orcs Must Die!
Orc waves follow fixed paths
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
MudRunner
Deforming mud behaves unpredictably until mapped.
Orcs Must Die!
Minor wave composition randomness
Orcs Must Die! leans a little harder on optimization, though the gap is small.
MudRunner
Fuel, load and route planning across the map is the core test.
Orcs Must Die!
Trap placement and kill-corridor economics are the 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.