head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Grand Arena
Early battle royale where scavenged loot and shrinking gas decide 150-player brawls.

Execution · Grand Arena
The battle royale archetype: loot, rotate, and outlast 99 opponents inside a shrinking circle.
H1Z1 leans Execution (Grand Arena); PlayerUnknown's Battlegrounds 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.
H1Z1
Gunfights and vehicle control decide duels
PlayerUnknown's Battlegrounds
Recoil control and long-range ballistics
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
H1Z1
Outguessing human rotations and pushes
PlayerUnknown's Battlegrounds
99 humans rotating and ambushing adaptively
PlayerUnknown's Battlegrounds leans a little harder on variance, though the gap is small.
H1Z1
Loot spawns and gas circles randomise runs
PlayerUnknown's Battlegrounds
Loot spawns and circle placement shape every match
PlayerUnknown's Battlegrounds leans a little harder on optimization, though the gap is small.
H1Z1
Drop spots, loot routes, and zone play
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.