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

Execution · Competitive PvP
Stick execution and reading human opponents within a meta-driven system.

Execution · Competitive PvP
Basketball stick execution layered over reading human defensive habits online.
FIFA 18 leans Execution (Competitive PvP); NBA Live 19 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 18
Perfect stick skill and timing dominate dribbles and finishing
NBA Live 19
Stick skills, shot timing and dribble moves decide possessions
FIFA 18 leans a little harder on reads, though the gap is small.
FIFA 18
Human opponents bait, switch tactics and counter your habits
NBA Live 19
Online opponents bait switches and read defensive habits
FIFA 18 leans a little harder on variance, though the gap is small.
FIFA 18
Bounce physics and pack luck add measured chaos
NBA Live 19
Shot RNG and physics add bounded noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 18
Formation, squad chemistry and meta mechanics reward study
NBA Live 19
Squad building and play selection matter underneath
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.