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
The pioneering large-scale WWII shooter built on combined-arms map chaos.

Execution · Competitive PvP
Execution on the ball plus constant prediction of the other player's shape.
Battlefield 1942 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.
Battlefield 1942
Aim, vehicle handling, and leading shots matter.
Pro Evolution Soccer 2009
Close control and finishing windows demand stick precision
Pro Evolution Soccer 2009 leans a little harder on reads, though the gap is small.
Battlefield 1942
Human teams adapt flanks and vehicle pushes.
Pro Evolution Soccer 2009
Online and couch opponents adjust tactics against you
Battlefield 1942 leans a little harder on variance, though the gap is small.
Battlefield 1942
64-player chaos and spawns add noise.
Pro Evolution Soccer 2009
Ricochets and keeper parries add small randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 1942
Map control and vehicle timing learnable.
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.