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 · Practiced Mastery
Shaving lap time through precise car control and solvable line and tuning choices.

Execution · Practiced Mastery
A precision metroidvania about learning fixed boss patterns and tight platforming.
Gran Turismo 5 Prologue leans Execution (Practiced Mastery); Hollow Knight 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.
Gran Turismo 5 Prologue
Braking points and throttle control decide every lap time
Hollow Knight
Precise platforming and pogo timing dominate hard content.
Gran Turismo 5 Prologue leans a little harder on reads, though the gap is small.
Gran Turismo 5 Prologue
Online racecraft adds light wheel-to-wheel prediction
Hollow Knight
Bosses run scripted attack pools; not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gran Turismo 5 Prologue
Tracks and physics are fixed and fully knowable
Hollow Knight
Negligible; world layout is fixed.
Gran Turismo 5 Prologue leans a little harder on optimization, though the gap is small.
Gran Turismo 5 Prologue
Tuning setups and racing lines are an engineering problem
Hollow Knight
Charm builds and boss routes are fully learnable.
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.