head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
Run-and-gun pattern memorisation executed under one-hit-death pressure.

Execution · Pure Mechanics
A run-and-gun shooter where memorizing enemy patterns and precise dodging carries survival.
Blazing Chrome leans Execution (Pure Mechanics); Metal Slug 4 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.
Blazing Chrome
One-hit deaths demand precise dodging and weapon discipline
Metal Slug 4
twitch dodging and shooting precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Blazing Chrome
Enemies and bosses are pure scripted patterns
Metal Slug 4
fixed enemy waves, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Blazing Chrome
Stages are fully deterministic
Metal Slug 4
minor drop randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Blazing Chrome
Memorising spawns and boss phases is the path to clears
Metal Slug 4
memorized patterns and routes solvable
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.