head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Practiced Mastery
The 1981 arcade classic of climbing girders and dodging barrels.

Execution · Pure Mechanics
Memorising punishing fixed stages and executing precise run-and-gun inputs.
Donkey Kong leans Execution (Practiced Mastery); Journey to Silius leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Donkey Kong
Frame-tight jumps over barrels under arcade pressure
Journey to Silius
Precise jumps and dodges under NES-hard pressure define it
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Donkey Kong
Fixed arcade patterns, nothing adapts
Journey to Silius
Every enemy and boss is rigidly scripted
Donkey Kong leans a little harder on variance, though the gap is small.
Donkey Kong
Barrel bounces add slight unpredictability
Journey to Silius
Identical layouts and spawns every attempt
Donkey Kong leans a little harder on optimization, though the gap is small.
Donkey Kong
Stage patterns and score routes fully learnable
Journey to Silius
Weapon-energy budgeting and pattern memorisation make clears possible
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.