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

Execution · Competitive PvP
Late-90s arcade football execution with couch-versus prediction and bouncy luck.

Execution · Competitive PvP
An early 3D soccer sim testing ball control and play against opponents.
FIFA 99 leans Execution (Competitive PvP); VR Soccer 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.
FIFA 99
Quick passing and shot timing in arcade-leaning football
VR Soccer
Controlling players, passing and shooting needs timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 99
Couch opponents can be conditioned and baited
VR Soccer
Human opponents read passes and feints adaptively
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 99
Era physics produce regular fluke goals
VR Soccer
Ball physics and outcomes carry sports randomness
VR Soccer leans a little harder on optimization, though the gap is small.
FIFA 99
Simple formations and known exploit angles map fast
VR Soccer
Formation and play strategy matter modestly
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.