head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, 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
Arcade wrestling testing combo execution and reversal mind-games against humans.
Pro Evolution Soccer 2009 leans Execution (Competitive PvP); WWE All Stars 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
WWE All Stars
Juggle combos and reversal timing drive every match
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
WWE All Stars
Human opponents bait reversals in constant mind-games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pro Evolution Soccer 2009
Ricochets and keeper parries add small randomness
WWE All Stars
Slight hit randomness rarely decides outcomes
Pro Evolution Soccer 2009 leans a little harder on optimization, though the gap is small.
Pro Evolution Soccer 2009
Squad setup and tactical sliders reward preparation
WWE All Stars
Class matchups and move properties are quickly learnable
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.