head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Competitive PvP
A soccer sim testing ball-control timing and tactical play.

Execution · Competitive PvP
Reversal timing and pacing against an opponent baiting your counters.
Actua Soccer 3 leans Execution (Competitive PvP); WWE 2K15 leans Execution (Competitive PvP).
Actua Soccer 3 leans a little harder on execution, though the gap is small.
Actua Soccer 3
Ball control, passing and shooting need timing precision
WWE 2K15
Reversal timing windows decide most exchanges
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Actua Soccer 3
Human opponents can be read; AI doesn't adapt
WWE 2K15
Human opponents bait reversals and vary move timing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Actua Soccer 3
Minor randomness in ball physics and deflections
WWE 2K15
Chain-wrestling rock-paper-scissors minigames add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Actua Soccer 3
Formations and tactics reward planning
WWE 2K15
Move sets, stamina and match pacing are learnable systems
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.