head to head
Realm Royale Reforged asks more than Battlefield 3, and the gap is variance.

Execution · Competitive PvP
Large-scale modern combined-arms shooter built on destructible maps and squad teamwork.

Execution · Twitch Chaos
Class-based battle royale gunfights shaped by loot luck and forge economy.
Battlefield 3 leans Execution (Competitive PvP); 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.
Battlefield 3
Gunplay, suppression management, and vehicle piloting
Realm Royale Reforged
Gunfights and mobility still decide most engagements
Battlefield 3 leans a little harder on reads, though the gap is small.
Battlefield 3
Human teams adapt routes and armor pushes
Realm Royale Reforged
Human opponents adapt, diluted across a big lobby
Realm Royale Reforged leans clearly harder on variance.
Battlefield 3
Spawns, destruction, and vehicle drops shuffle engagements
Realm Royale Reforged
Loot drops and circle RNG steer every match
Battlefield 3 leans a little harder on optimization, though the gap is small.
Battlefield 3
Unlock paths, class synergy, and map control
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.