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.

Execution · Pure Mechanics
A test of fast, precise shooting and map navigation against scripted but relentless enemies.

Execution · Pure Mechanics
A bullet-hell shooter testing precise dodging through scripted Korean-mythology patterns.
Doom (1993) leans Execution (Pure Mechanics); Shikhondo: Soul Eater leans Execution (Pure Mechanics).
Shikhondo: Soul Eater leans a little harder on execution, though the gap is small.
Doom (1993)
Precise movement and shooting against relentless enemy pressure
Shikhondo: Soul Eater
Weaving through dense bullet patterns is the entire game
Shikhondo: Soul Eater leans a little harder on reads, though the gap is small.
Doom (1993)
Enemies follow scripted patrol and attack patterns, not adaptive
Shikhondo: Soul Eater
Bosses fire scripted patterns, not adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Doom (1993)
Enemy placement is fixed but unknown on first run through levels
Shikhondo: Soul Eater
Some spawn and item-timing randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Doom (1993)
Level routing and resource management determine survival efficiency
Shikhondo: Soul Eater
Pattern memorization and scoring routes reward study
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.