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
Football execution and human mind-games layered over tactical formation play.

Execution · Competitive PvP
Large-battle aim and positioning with light prediction against human players.
International Superstar Soccer Pro 98 leans Execution (Competitive PvP); Star Wars: Battlefront II 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.
International Superstar Soccer Pro 98
First-touch timing and finishing demand practiced hands
Star Wars: Battlefront II
Aimbot dominates infantry fights and starfighter dogfights
International Superstar Soccer Pro 98 leans a little harder on reads, though the gap is small.
International Superstar Soccer Pro 98
Versus matches hinge on outguessing a human defender
Star Wars: Battlefront II
Human opponents in multiplayer create modest prediction play
Star Wars: Battlefront II leans a little harder on variance, though the gap is small.
International Superstar Soccer Pro 98
Bounces and deflections add bounded match chaos
Star Wars: Battlefront II
Spawns, vehicle availability and hero pickups add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
International Superstar Soccer Pro 98
Formations and set-piece routines have learnable best answers
Star Wars: Battlefront II
Class choice and map control reward learned plans
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.