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

Execution · Pure Mechanics
Browser-era refinement of Quake III, the benchmark for raw arena FPS skill.

Execution · Pure Mechanics
Classic arena shooter with faction abilities.
Quake Live leans Execution (Pure Mechanics); XDefiant leans Execution (Pure Mechanics).
Quake Live leans a little harder on execution, though the gap is small.
Quake Live
Rail aim and strafe-jump movement are the purest hand test
XDefiant
Fast arena TTK with no SBMM crutch
Quake Live leans a little harder on reads, though the gap is small.
Quake Live
Duels are mind games against an adapting human opponent
XDefiant
Pre-aim and pacing duels reward prediction
XDefiant leans a little harder on variance, though the gap is small.
Quake Live
Symmetric arenas, full information, almost no randomness
XDefiant
Minimal RNG, mostly skill outcomes
Quake Live leans a little harder on optimization, though the gap is small.
Quake Live
Item timing and map control are deeply solvable
XDefiant
Faction abilities and attachments tune fights
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.