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

Reads · Grand Arena
A team MOBA where map control and adaptive duels decide objectives.

Reads · Grand Arena
A multiplayer survival sandbox where human adversaries make every base a target.
League of Legends leans Reads (Grand Arena); Rust leans Reads (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
League of Legends
Mechanics matter but not aimbot-decisive.
Rust
Aim and recoil control crucial in PvP encounters.
League of Legends leans a little harder on reads, though the gap is small.
League of Legends
Lane and jungle constantly mind-game opponents.
Rust
Human raiders and roamers adapt to your patterns constantly.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
League of Legends
Champion select and minor RNG only.
Rust
Loot and resource spawns add modest randomness.
League of Legends leans a little harder on optimization, though the gap is small.
League of Legends
Itemization, wave management, and macro are solvable.
Rust
Base design, farming, and raid prep dominate strategy.
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.