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 bullet-hell shooter testing precision dodging through dense scripted patterns.

Execution · Pure Mechanics
Capcom's infamously punishing arcade platformer that makes you beat it twice for the real ending.
Bullet Heaven 2 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.
Bullet Heaven 2
Dodging dense bullet patterns is the whole game
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.
Bullet Heaven 2
Bosses fire scripted patterns, not adaptive
Ghosts 'n Goblins
Enemy spawns are scripted
Bullet Heaven 2 leans a little harder on variance, though the gap is small.
Bullet Heaven 2
Item drops add minor randomness
Ghosts 'n Goblins
Red Arremer movement adds slight noise
Ghosts 'n Goblins leans a little harder on optimization, though the gap is small.
Bullet Heaven 2
Character and weapon choice optimize survival underneath
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.