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.

Execution · Pure Mechanics
Multiplayer-focused Halo with the series' highest movement skill ceiling.

Execution · Competitive PvP
A beloved movement shooter pairing an execution-heavy campaign with adaptive pilot duels.
Halo 5: Guardians leans Execution (Pure Mechanics); Titanfall 2 leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Halo 5: Guardians
Thrusters, clamber, and aim raise the ceiling
Titanfall 2
Slide-hopping and aim under speed set a high ceiling
Titanfall 2 leans a little harder on reads, though the gap is small.
Halo 5: Guardians
Arena ranked play is human-versus-human
Titanfall 2
Multiplayer pilots out-position and out-guess each other
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Halo 5: Guardians
Spawns and REQ Warzone randomness
Titanfall 2
Flank uncertainty and titanfall timing only
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Halo 5: Guardians
Movement routes and weapon timers
Titanfall 2
Campaign gauntlets and loadout synergies are solvable
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.