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
Football stick execution and opponent reading, salted with bounce-of-the-ball luck.

Execution · Competitive PvP
A grapple-timing and guessing game built for couch competition.
FIFA Soccer 07 leans Execution (Competitive PvP); WWF WrestleMania 2000 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.
FIFA Soccer 07
Stick skills and timing on passes and finishing
WWF WrestleMania 2000
Grapple timing and reversal windows reward fast hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 07
Versus humans, baiting tackles and disguising attacks matters
WWF WrestleMania 2000
Versus friends, grapple-versus-strike guessing is a real mind game
FIFA Soccer 07 leans a little harder on variance, though the gap is small.
FIFA Soccer 07
Deflections and keeper randomness swing single matches
WWF WrestleMania 2000
Momentum swings add some scripted drama
FIFA Soccer 07 leans a little harder on optimization, though the gap is small.
FIFA Soccer 07
Formations and exploit patterns are learnable meta
WWF WrestleMania 2000
Move sets and reversal systems are learnable but shallow
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.