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 · Competitive PvP
Fast arena combat that tests combo execution and counter prediction against human opponents.

Execution · Pure Mechanics
A PS4-era Killzone where a Shadow Marshal and his OWL drone fight through a divided Helghast city.
Dragon Ball Z: Budokai Tenkaichi leans Execution (Competitive PvP); Killzone Shadow Fall 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.
Dragon Ball Z: Budokai Tenkaichi
Combo timing, dashes and beam clashes reward fast hands
Killzone Shadow Fall
Standard FPS aim and movement ceiling
Dragon Ball Z: Budokai Tenkaichi leans a little harder on reads, though the gap is small.
Dragon Ball Z: Budokai Tenkaichi
Versus humans, predicting teleport counters and ki tactics matters
Killzone Shadow Fall
PvP modes reward predicting human players
Killzone Shadow Fall leans a little harder on variance, though the gap is small.
Dragon Ball Z: Budokai Tenkaichi
Almost nothing random once movesets are known
Killzone Shadow Fall
Some open level routes and spawn noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi
Character matchups and attribute builds are learnable systems
Killzone Shadow Fall
OWL drone usage and loadouts optimize cleanly
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.