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 · Pure Mechanics
A vertical bullet-hell shooter testing precise dodging and scoring chains.

Execution · Pure Mechanics
Capcom's infamously punishing arcade platformer that makes you beat it twice for the real ending.
DonPachi leans Execution (Pure Mechanics); Ghosts 'n Goblins 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.
DonPachi
Precise dodging through dense bullet patterns defines play
Ghosts 'n Goblins
Committed jumps and pixel-precise throws, no mercy
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DonPachi
Solo - enemies follow fixed bullet patterns
Ghosts 'n Goblins
Enemy spawns are scripted
DonPachi leans a little harder on variance, though the gap is small.
DonPachi
Patterns fixed once memorized, minimal randomness
Ghosts 'n Goblins
Red Arremer movement adds slight noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
DonPachi
Chaining and weapon choice maximize score
Ghosts 'n Goblins
Weapon choice and route memorisation are mandatory
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.