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 · Practiced Mastery
Stick-controlled tennis testing swing timing and percentage shot selection.

Execution · Practiced Mastery
Chaining flashy trick combos to fuel momentum-swinging Gamebreakers.
Grand Slam Tennis 2 leans Execution (Practiced Mastery); NBA Street leans Execution (Practiced Mastery).
Grand Slam Tennis 2 leans a little harder on execution, though the gap is small.
Grand Slam Tennis 2
Total Racket Control stick swings demand precise timing
NBA Street
Trick combos and Gamebreaker timing drive scoring
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Slam Tennis 2
Versus humans, disguising shot placement is genuine prediction
NBA Street
Local versus play rewards baiting steals and blocks
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Slam Tennis 2
Ball physics are nearly deterministic
NBA Street
Courts and AI behaviour are deterministic
Grand Slam Tennis 2 leans a little harder on optimization, though the gap is small.
Grand Slam Tennis 2
Shot selection and court positioning follow learnable percentages
NBA Street
Trick-point economy and Gamebreaker management are 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.