head to head
ARC Raiders asks more than Realm Royale Reforged, and the gap is reads.

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

Execution · Twitch Chaos
Class-based battle royale gunfights shaped by loot luck and forge economy.
ARC Raiders leans Execution (Grand Arena); Realm Royale Reforged leans Execution (Twitch Chaos).
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
Realm Royale Reforged
Gunfights and mobility still decide most engagements
ARC Raiders leans clearly harder on reads.
ARC Raiders
Rival squads ambush, bait, and adapt
Realm Royale Reforged
Human opponents adapt, diluted across a big lobby
ARC Raiders leans a little harder on variance, though the gap is small.
ARC Raiders
Loot spawns and unknown player positions
Realm Royale Reforged
Loot drops and circle RNG steer every match
ARC Raiders leans a little harder on optimization, though the gap is small.
ARC Raiders
Loadout economy and map knowledge compound
Realm Royale Reforged
Class picks and forge timing reward planning
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.