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
Memorising stage routes and executing them cleanly for ranks and speed.

Optimization · Practiced Mastery
The streamlined modern reboot of classic Lara, light on every axis but optimization.
Sonic Adventure 2: Battle leans Execution (Practiced Mastery); Tomb Raider: Legend leans Optimization (Practiced Mastery).
Sonic Adventure 2: Battle leans a little harder on execution, though the gap is small.
Sonic Adventure 2: Battle
Speed-stage control and rail precision reward clean hands
Tomb Raider: Legend
Modernized grapple platforming with forgiving timing
Sonic Adventure 2: Battle leans a little harder on reads, though the gap is small.
Sonic Adventure 2: Battle
Two-player battles exist but stay shallow and scripted
Tomb Raider: Legend
Scripted mercenaries pose no adaptive threat
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Adventure 2: Battle
Stages are fixed; Chao stats are deterministic grinding
Tomb Raider: Legend
Linear levels leave little hidden
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Adventure 2: Battle
Rank chasing means memorising routes and score lines
Tomb Raider: Legend
Puzzle rooms and time trials are cleanly solvable
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.