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
Fast arena-style shooter mixing a scripted Strogg campaign with twitch multiplayer.

Execution · Pure Mechanics
Fast 2D multiplayer duels testing movement execution and human prediction.
Quake 4 leans Execution (Pure Mechanics); Soldat 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.
Quake 4
Aimbot plus strafe-jump inputs dominate both campaign and multiplayer
Soldat
Jet-boost movement and tracking aim define every duel
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Quake 4
Multiplayer duels reward predicting human positioning and timing
Soldat
Human opponents juke and bait around map flow
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Quake 4
Spawn and item timing add mild uncertainty
Soldat
Spray patterns add minor noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Quake 4
Item control routes and weapon picks are learnable
Soldat
Weapon matchups and map control knowledge sit underneath
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.