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
The original twitch FPS - movement tech and rockets define skill.

Execution · Pure Mechanics
An arcade tennis game rewarding precise timing and reading human opponents.
Quake leans Execution (Pure Mechanics); Virtua Tennis 4 leans Execution (Pure Mechanics).
Quake leans a little harder on execution, though the gap is small.
Quake
Rocket aim and movement tech ceiling massive.
Virtua Tennis 4
precise shot timing and positioning
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Quake
PvP duels involve real opponent modeling.
Virtua Tennis 4
human opponents can be out-predicted in rallies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Quake
Item timing deterministic once learned.
Virtua Tennis 4
minor ball-bounce randomness
Quake leans a little harder on optimization, though the gap is small.
Quake
Map control and item routes solvable.
Virtua Tennis 4
minimal build depth, mostly play skill
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.