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 · Grand Arena
Acclaimed basketball sim where playcalling and matchup reads decide online games.

Execution · Competitive PvP
Stick precision and constant prediction of a human opponent's tactical habits.
NBA 2K11 leans Execution (Grand Arena); Pro Evolution Soccer 2015 leans Execution (Competitive PvP).
Pro Evolution Soccer 2015 leans a little harder on execution, though the gap is small.
NBA 2K11
Shot-stick timing and dribble moves
Pro Evolution Soccer 2015
First touch, through-ball timing and finishing demand precise sticks
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K11
Human defenders bait and adapt possession to possession
Pro Evolution Soccer 2015
Human opponents bait, switch tactics and punish habits
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K11
Shooting rolls add mild noise
Pro Evolution Soccer 2015
Deflections and referee calls add bounded chaos
NBA 2K11 leans a little harder on optimization, though the gap is small.
NBA 2K11
Playbooks, matchup exploits, and roster knowledge
Pro Evolution Soccer 2015
Formations, player roles and set pieces reward study
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.