head to head
ARC Raiders asks more than Stalcraft: X, and the gap is variance.

Execution · Grand Arena
An extraction shooter where scavengers dodge killer machines and rival squads for loot.

Execution · Competitive PvP
Open-zone gunfights where aim, ambush prediction and gear economy all matter.
ARC Raiders leans Execution (Grand Arena); Stalcraft: X 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.
ARC Raiders
Gunplay and movement under machine fire
Stalcraft: X
Gunfights against other stalkers reward raw aim and movement
ARC Raiders leans a little harder on reads, though the gap is small.
ARC Raiders
Rival squads ambush, bait, and adapt
Stalcraft: X
Open-zone PvP means predicting ambushes from adapting humans
ARC Raiders leans clearly harder on variance.
ARC Raiders
Loot spawns and unknown player positions
Stalcraft: X
Anomalies, artifact spawns and who you meet inject randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
ARC Raiders
Loadout economy and map knowledge compound
Stalcraft: X
Gear economy, artifact builds and route knowledge compound
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.