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 · Twitch Chaos
A scarcity-driven aim test under randomised objectives and spawns.

Execution · Competitive PvP
Large-battle aim and positioning with light prediction against human players.
Contagion leans Execution (Twitch Chaos); Star Wars: Battlefront II leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Contagion
Deliberate aim with scarce ammo decides zombie encounters
Star Wars: Battlefront II
Aimbot dominates infantry fights and starfighter dogfights
Star Wars: Battlefront II leans a little harder on reads, though the gap is small.
Contagion
Hunted mode pits humans against humans; zombies are mindless
Star Wars: Battlefront II
Human opponents in multiplayer create modest prediction play
Contagion leans a little harder on variance, though the gap is small.
Contagion
Randomised objectives, spawns and routes reshape every round
Star Wars: Battlefront II
Spawns, vehicle availability and hero pickups add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Contagion
Resource discipline and map knowledge carry survival
Star Wars: Battlefront II
Class choice and map control reward learned plans
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.