head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
A tennis game testing swing timing, positioning, and anticipating returns.

Execution · Pure Mechanics
Heavy first-person gunplay testing aim, with positional prediction in multiplayer.
Anna Kournikova's Smash Court Tennis leans Execution (Pure Mechanics); 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.
Anna Kournikova's Smash Court Tennis
Timing swings and positioning drive every rally
Killzone 3
Weighty gunplay still demands aim and recoil control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Anna Kournikova's Smash Court Tennis
Versus play rewards anticipating opponent shots
Killzone 3
Multiplayer opponents flank and bait; campaign AI is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Anna Kournikova's Smash Court Tennis
Little randomness in ball physics
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.
Anna Kournikova's Smash Court Tennis
Shot selection and court positioning strategy
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.