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 · Competitive PvP
A tennis simulation where timing execution and reading opponent tendencies drive competitive outcomes.

Execution · Competitive PvP
Stick-skill football against human opponents whose habits must be read.
AO Tennis 2 leans Execution (Competitive PvP); FIFA Soccer 13 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.
AO Tennis 2
Ball timing and serve placement have clear skill ceilings
FIFA Soccer 13
Ball control and finishing inputs decide moments
FIFA Soccer 13 leans a little harder on reads, though the gap is small.
AO Tennis 2
Online human opponents create adaptive rally patterns
FIFA Soccer 13
Online humans keep adjusting their patterns
FIFA Soccer 13 leans a little harder on variance, though the gap is small.
AO Tennis 2
Very little luck in outcomes
FIFA Soccer 13
First-touch randomness and deflections add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
AO Tennis 2
Player builds and tactical shot variety are learnable systems
FIFA Soccer 13
Tactics and squad setup are a studied layer
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.