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
Football sim testing stick execution and reading a human opponent's tactical habits.

Execution · Competitive PvP
A one-on-one basketball game testing shot timing and reading the opponent.
FIFA Soccer 11 leans Execution (Competitive PvP); Jordan vs. Bird: One on One 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 11
Pass timing, dribbling and finishing demand stick skill
Jordan vs. Bird: One on One
Timing shots, jumps and dunks needs precise input
FIFA Soccer 11 leans a little harder on reads, though the gap is small.
FIFA Soccer 11
Human opponents' defensive habits and attacking patterns must be modelled
Jordan vs. Bird: One on One
Human opponent in one-on-one can be predicted and faked
FIFA Soccer 11 leans a little harder on variance, though the gap is small.
FIFA Soccer 11
Deflections and keeper behaviour add bounded chaos
Jordan vs. Bird: One on One
Shot success has mild randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 11
Formations, tactics and squad knowledge shape matches
Jordan vs. Bird: One on One
Knowing shot positions and patterns improves scoring
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.