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
Online football where stick control meets reading opponents.

Execution · Competitive PvP
Striking execution and constant human mix-up prediction across MMA phases.
EA Sports FC 24 leans Execution (Competitive PvP); EA Sports UFC 5 leans Execution (Competitive PvP).
EA Sports FC 24 leans a little harder on execution, though the gap is small.
EA Sports FC 24
Precise stick skills, timing, dribbling under pressure
EA Sports UFC 5
Strike timing, head movement and transition denial demand hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
EA Sports FC 24
Online play vs adapting humans rewards prediction
EA Sports UFC 5
Out-guessing a human's strike-grapple mix is the core duel
EA Sports FC 24 leans a little harder on variance, though the gap is small.
EA Sports FC 24
Minor RNG in deflections and momentum swings
EA Sports UFC 5
Damage events and doctor stoppages add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
EA Sports FC 24
Squad building, tactics, Ultimate Team economy
EA Sports UFC 5
Stamina math and matchup study underpin 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.