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 · Practiced Mastery
Seamless 3D platformer about collecting power cells across a precursor world.

Execution · Practiced Mastery
Memorising stage routes and executing them cleanly for ranks and speed.
Jak and Daxter: The Precursor Legacy leans Execution (Practiced Mastery); Sonic Adventure 2: Battle leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Jak and Daxter: The Precursor Legacy
Precise jumping and combo movement
Sonic Adventure 2: Battle
Speed-stage control and rail precision reward clean hands
Sonic Adventure 2: Battle leans a little harder on reads, though the gap is small.
Jak and Daxter: The Precursor Legacy
Lurkers follow set patterns
Sonic Adventure 2: Battle
Two-player battles exist but stay shallow and scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Jak and Daxter: The Precursor Legacy
Static seamless world
Sonic Adventure 2: Battle
Stages are fixed; Chao stats are deterministic grinding
Sonic Adventure 2: Battle leans a little harder on optimization, though the gap is small.
Jak and Daxter: The Precursor Legacy
Power-cell routing across the connected world
Sonic Adventure 2: Battle
Rank chasing means memorising routes and score lines
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.