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
An arcade soccer game testing ball control and prediction against opponents.

Execution · Competitive PvP
Accessible large-scale shooting with light prediction against human players.
International Superstar Soccer 2 leans Execution (Competitive PvP); Star Wars Battlefront 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 2
Passing, shooting and dribbling timing decides plays
Star Wars Battlefront
Aimbot dominates blaster fights despite generous hitboxes
International Superstar Soccer 2 leans a little harder on reads, though the gap is small.
International Superstar Soccer 2
Human opponents juke and feint, demanding prediction
Star Wars Battlefront
Human lobbies add modest positional prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
International Superstar Soccer 2
Ball physics and deflections add some chaos
Star Wars Battlefront
Power-up pickups and spawn flow inject chaos
International Superstar Soccer 2 leans a little harder on optimization, though the gap is small.
International Superstar Soccer 2
Formations, tactics and build-up play matter underneath
Star Wars Battlefront
Objective timing and pickup control reward learned routes
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.