head to head
Z1 Battle Royale asks more than Stalcraft: X, and the gap is variance.

Execution · Competitive PvP
Open-zone gunfights where aim, ambush prediction and gear economy all matter.

Execution · Grand Arena
An early battle royale shooter where dozens of players loot, drive, and shoot to be the last one standing.
Stalcraft: X leans Execution (Competitive PvP); Z1 Battle Royale leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Stalcraft: X
Gunfights against other stalkers reward raw aim and movement
Z1 Battle Royale
Gunplay, bullet drop, and car control under pressure
Z1 Battle Royale leans a little harder on reads, though the gap is small.
Stalcraft: X
Open-zone PvP means predicting ambushes from adapting humans
Z1 Battle Royale
Human opponents rotate, bait, and adapt to you
Z1 Battle Royale leans clearly harder on variance.
Stalcraft: X
Anomalies, artifact spawns and who you meet inject randomness
Z1 Battle Royale
Loot spawns, drop locations, and gas circles
Stalcraft: X leans a little harder on optimization, though the gap is small.
Stalcraft: X
Gear economy, artifact builds and route knowledge compound
Z1 Battle Royale
Loadout and rotation strategy is a thinner layer
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.