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 · Practiced Mastery
The sequel adding Horde mode to the campaign-plus-versus cover shooter formula.

Execution · Competitive PvP
A football simulation testing ball control, tactics and reading opponents.
Gears of War 2 leans Execution (Practiced Mastery); Pro Evolution Soccer 2011 3D 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.
Gears of War 2
Gnasher battles and movement tech set the ceiling
Pro Evolution Soccer 2011 3D
Passing, shooting and dribbling controls demand timing
Pro Evolution Soccer 2011 3D leans a little harder on reads, though the gap is small.
Gears of War 2
Human opponents in versus drive prediction play
Pro Evolution Soccer 2011 3D
Human opponents must be outguessed in real time
Pro Evolution Soccer 2011 3D leans a little harder on variance, though the gap is small.
Gears of War 2
Horde spawns add mild randomness
Pro Evolution Soccer 2011 3D
Deflections and physics add measured unpredictability
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gears of War 2
Power-weapon timing and positioning are solvable
Pro Evolution Soccer 2011 3D
Formations and tactics reward strategic planning
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.