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
Execution on the ball plus constant prediction of the other player's shape.

Execution · Competitive PvP
Tests arena brawling timing and skill-build crafting against human opponents.
Pro Evolution Soccer 2009 leans Execution (Competitive PvP); Sonic Battle 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.
Pro Evolution Soccer 2009
Close control and finishing windows demand stick precision
Sonic Battle
Aerial juggles and guard timing on a grid arena
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pro Evolution Soccer 2009
Online and couch opponents adjust tactics against you
Sonic Battle
Versus humans, baiting special skill choices is the edge
Pro Evolution Soccer 2009 leans a little harder on variance, though the gap is small.
Pro Evolution Soccer 2009
Ricochets and keeper parries add small randomness
Sonic Battle
Little randomness beyond skill-card drops
Sonic Battle leans a little harder on optimization, though the gap is small.
Pro Evolution Soccer 2009
Squad setup and tactical sliders reward preparation
Sonic Battle
Custom skill builds for Emerl define the meta
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.