head to head
Neither is simply harder - they are hard in different places. PlayerUnknown's Battlegrounds demands more variance; War Thunder demands more optimization.

Execution · Grand Arena
The battle royale archetype: loot, rotate, and outlast 99 opponents inside a shrinking circle.

Execution · Grand Arena
Sim-leaning combined-arms vehicle PvP.
PlayerUnknown's Battlegrounds leans Execution (Grand Arena); War Thunder 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.
PlayerUnknown's Battlegrounds
Recoil control and long-range ballistics
War Thunder
Aim, lead, and vehicle handling demanding
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
PlayerUnknown's Battlegrounds
99 humans rotating and ambushing adaptively
War Thunder
Position-versus-position duels are reads
PlayerUnknown's Battlegrounds leans clearly harder on variance.
PlayerUnknown's Battlegrounds
Loot spawns and circle placement shape every match
War Thunder
Shell ballistics and matchmaking vary
War Thunder leans clearly harder on optimization.
PlayerUnknown's Battlegrounds
Zone rotations and positioning theory are learnable
War Thunder
Vehicle lineups and module unlocks deep
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.