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 PS4-era Killzone where a Shadow Marshal and his OWL drone fight through a divided Helghast city.

Execution · Pure Mechanics
Momentum-perfect platform racing spiced with item mind games against humans.
Killzone Shadow Fall leans Execution (Pure Mechanics); SpeedRunners leans Execution (Pure Mechanics).
SpeedRunners leans a little harder on execution, though the gap is small.
Killzone Shadow Fall
Standard FPS aim and movement ceiling
SpeedRunners
Grapple swings and boost timing at full speed decide races
SpeedRunners leans a little harder on reads, though the gap is small.
Killzone Shadow Fall
PvP modes reward predicting human players
SpeedRunners
Timing item throws against human racers' habits wins exchanges
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Killzone Shadow Fall
Some open level routes and spawn noise
SpeedRunners
Item pickups add party-game chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Killzone Shadow Fall
OWL drone usage and loadouts optimize cleanly
SpeedRunners
Optimal racing lines per track are 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.