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
A 2D anime fighter testing combo execution and team-assist planning.

Execution · Pure Mechanics
Heavy first-person gunplay testing aim, with positional prediction in multiplayer.
Dragon Ball Z: Extreme Butouden leans Execution (Competitive PvP); Killzone 3 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: Extreme Butouden
2D combo strings and assist timing demand quick hands
Killzone 3
Weighty gunplay still demands aim and recoil control
Dragon Ball Z: Extreme Butouden leans a little harder on reads, though the gap is small.
Dragon Ball Z: Extreme Butouden
Human versus play rewards predicting habits; AI is scripted
Killzone 3
Multiplayer opponents flank and bait; campaign AI is scripted
Killzone 3 leans a little harder on variance, though the gap is small.
Dragon Ball Z: Extreme Butouden
Deterministic systems leave little to chance
Killzone 3
Spawns and spread inject limited randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Extreme Butouden
Team composition and assist synergy form the strategy layer
Killzone 3
Map control, loadouts and class roles structure multiplayer
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.