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 · Competitive PvP
Stick execution and outguessing a human defender, with tactics underneath.

Execution · Competitive PvP
Rockstar's stripped-down table tennis game, all spin, placement, and rally nerve.
FIFA Soccer 08 leans Execution (Competitive PvP); Rockstar Games Presents Table Tennis leans Execution (Competitive PvP).
Rockstar Games Presents Table Tennis leans a little harder on execution, though the gap is small.
FIFA Soccer 08
Dribbling, timing tackles and finishing reward stick skill
Rockstar Games Presents Table Tennis
Spin placement and rally tempo demand exacting stick control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 08
Versus humans, baiting defenders and disguising attacks is core
Rockstar Games Presents Table Tennis
Versus rallies are pure placement and spin prediction
FIFA Soccer 08 leans a little harder on variance, though the gap is small.
FIFA Soccer 08
Ball physics adds bounce noise to single matches
Rockstar Games Presents Table Tennis
Fully deterministic ball physics
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 08
Formations and squad selection matter but stay shallow
Rockstar Games Presents Table Tennis
Character styles and spin counters are learnable
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.