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
A tennis game testing swing timing, positioning, and anticipating returns.

Execution · Competitive PvP
Football execution with finer dribble control, human prediction, and bounce luck.
Anna Kournikova's Smash Court Tennis leans Execution (Pure Mechanics); FIFA Soccer 10 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.
Anna Kournikova's Smash Court Tennis
Timing swings and positioning drive every rally
FIFA Soccer 10
360-degree dribbling raised the stick-skill ceiling
FIFA Soccer 10 leans a little harder on reads, though the gap is small.
Anna Kournikova's Smash Court Tennis
Versus play rewards anticipating opponent shots
FIFA Soccer 10
Outguessing a human defender's tackle timing is constant
FIFA Soccer 10 leans a little harder on variance, though the gap is small.
Anna Kournikova's Smash Court Tennis
Little randomness in ball physics
FIFA Soccer 10
Deflections and keeper randomness swing tight matches
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Anna Kournikova's Smash Court Tennis
Shot selection and court positioning strategy
FIFA Soccer 10
Formations, tactics and manager mode reward study
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.