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

Execution · Pure Mechanics
Memorising brutal scripted patterns and executing them without a single slip.

Execution · Practiced Mastery
Hornet's faster, harder metroidvania sequel built on acrobatic execution.
Contra: Hard Corps leans Execution (Pure Mechanics); Hollow Knight: Silksong leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Contra: Hard Corps
One-hit deaths under relentless bullet pressure demand perfect inputs
Hollow Knight: Silksong
Faster, harsher boss patterns demand sharper inputs
Hollow Knight: Silksong leans a little harder on reads, though the gap is small.
Contra: Hard Corps
Bosses are fully scripted setpieces
Hollow Knight: Silksong
Enemies are scripted, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Contra: Hard Corps
Everything fixed once routes and patterns are known
Hollow Knight: Silksong
Secrets and routes hidden on first run
Hollow Knight: Silksong leans a little harder on optimization, though the gap is small.
Contra: Hard Corps
Memorising boss patterns, weapons and branching routes is mandatory
Hollow Knight: Silksong
Tool builds and pattern mastery convert practice to wins
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.