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

Execution · Competitive PvP
Stick execution and reading human opponents within a meta-driven system.

Execution · Grand Arena
A classic football simulation with tactical team management.
FIFA 18 leans Execution (Competitive PvP); Winning Eleven: Pro Evolution Soccer 2007 leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 18
Perfect stick skill and timing dominate dribbles and finishing
Winning Eleven: Pro Evolution Soccer 2007
passing/shooting timing needs real precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 18
Human opponents bait, switch tactics and counter your habits
Winning Eleven: Pro Evolution Soccer 2007
human opponents adapt tactics against you
FIFA 18 leans a little harder on variance, though the gap is small.
FIFA 18
Bounce physics and pack luck add measured chaos
Winning Eleven: Pro Evolution Soccer 2007
minor ball-physics randomness
Winning Eleven: Pro Evolution Soccer 2007 leans a little harder on optimization, though the gap is small.
FIFA 18
Formation, squad chemistry and meta mechanics reward study
Winning Eleven: Pro Evolution Soccer 2007
tactics and formations are learnable systems
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.