head to head
PlayerUnknown's Battlegrounds asks more than Marathon, and the gap is variance.

Execution · Competitive PvP
Aim duels against human crews layered over hidden-information loot gambles and extraction timing.

Execution · Grand Arena
The battle royale archetype: loot, rotate, and outlast 99 opponents inside a shrinking circle.
Marathon leans Execution (Competitive PvP); PlayerUnknown's Battlegrounds leans Execution (Grand Arena).
Marathon leans a little harder on execution, though the gap is small.
Marathon
Gunfights against other crews reward raw aim heavily
PlayerUnknown's Battlegrounds
Recoil control and long-range ballistics
Marathon leans a little harder on reads, though the gap is small.
Marathon
Predicting human crews' rotations and ambushes is constant
PlayerUnknown's Battlegrounds
99 humans rotating and ambushing adaptively
PlayerUnknown's Battlegrounds leans clearly harder on variance.
Marathon
Loot spawns and unseen squads create hidden information
PlayerUnknown's Battlegrounds
Loot spawns and circle placement shape every match
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Marathon
Loadout economics and extraction routing sit underneath
PlayerUnknown's Battlegrounds
Zone rotations and positioning theory are learnable
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.