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
A soccer simulation testing ball-control execution and reading human opponents.

Execution · Competitive PvP
Execution on the ball plus constant prediction of the other player's shape.
FIFA 06: Road to FIFA World Cup leans Execution (Competitive PvP); Pro Evolution Soccer 2009 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 06: Road to FIFA World Cup
Passing, shooting and movement timing decide matches
Pro Evolution Soccer 2009
Close control and finishing windows demand stick precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 06: Road to FIFA World Cup
Human opponents can be read; AI is scripted
Pro Evolution Soccer 2009
Online and couch opponents adjust tactics against you
FIFA 06: Road to FIFA World Cup leans a little harder on variance, though the gap is small.
FIFA 06: Road to FIFA World Cup
Some randomness in ball physics and outcomes
Pro Evolution Soccer 2009
Ricochets and keeper parries add small randomness
FIFA 06: Road to FIFA World Cup leans a little harder on optimization, though the gap is small.
FIFA 06: Road to FIFA World Cup
Formations, tactics and player management matter
Pro Evolution Soccer 2009
Squad setup and tactical sliders reward preparation
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.