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-skill basketball execution layered with predicting a human opponent's play-calling.

Execution · Competitive PvP
The peak-era Konami football game prized for weighty, skill-driven match play.
NBA 2K10 leans Execution (Competitive PvP); Pro Evolution Soccer 6 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.
NBA 2K10
Shot timing, dribble moves and defense need real stick skill
Pro Evolution Soccer 6
First touch, through balls, and dribbles demand precise control
Pro Evolution Soccer 6 leans a little harder on reads, though the gap is small.
NBA 2K10
Human opponents' play-calling and tendencies must be predicted
Pro Evolution Soccer 6
Versus matches are constant feint and positioning prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K10
Shot RNG and bounces add modest game-to-game noise
Pro Evolution Soccer 6
Deflections and keeper spills add light randomness
NBA 2K10 leans a little harder on optimization, though the gap is small.
NBA 2K10
Roster knowledge, play-calling and matchup exploitation reward study
Pro Evolution Soccer 6
Formations and player roles are studyable
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.